Este gráfico demuestra que estudiar un poco cada día hace que recordemos mejor el vocabulario.

Because gráfico is a masculine singular noun, so it needs the masculine singular demonstrative este.

• este = this, for masculine singular nouns
• esta = this, for feminine singular nouns

So:

• este gráfico
• esta tabla
• esta gráfica if you were using the feminine noun gráfica

Because the stress falls on the third-to-last syllable: grá-fi-co.

In Spanish, any word stressed on the third-to-last syllable is written with an accent mark. These are called esdrújulas, and they always carry a written accent.

So the accent tells you to stress grá.

Here que means that and introduces a subordinate clause.

So the structure is:

• Este gráfico demuestra que...
• This graph shows/demonstrates that...

This is very common in Spanish:

• Creo que... = I think that...
• Parece que... = It seems that...
• Está claro que... = It is clear that...

Because in Spanish, an infinitive can act like a noun or a whole activity.

Here estudiar un poco cada día means something like studying a little every day. That whole action is the subject of hace.

So the sentence is structured like this:

• [Estudiar un poco cada día] hace que...

Spanish often uses the infinitive this way:

• Fumar es malo = Smoking is bad
• Leer ayuda mucho = Reading helps a lot

Un poco means a little or a bit.

In this sentence, it modifies estudiar and tells you the amount of studying: studying a little each day.

It is a very natural expression in Spanish:

• Dormir un poco
• Practicar un poco
• Hablar un poco

It does not mean a specific quantity; it just means a small amount.

Both are possible, and both can mean every day.

The difference is mainly one of style or nuance:

• cada día = each day / every day
• todos los días = every day, with a slightly more explicit repeated sense

In this sentence, cada día sounds very natural because it focuses on the day-by-day habit.

Hacer que often means to make someone do something or to cause something to happen.

In this sentence:

• estudiar un poco cada día hace que recordemos...

Literally, it is close to:

• studying a little each day makes that we remember...

But in natural English, you translate it as:

• studying a little each day makes us remember...
• studying a little each day causes us to remember...

So hace que introduces the result or effect.

Because after hacer que, Spanish normally uses the subjunctive when talking about the effect something has on someone.

So:

• hace que recordemos = makes us remember

Not:

• hace que recordamos

This is a very common pattern:

• Esto hace que sea más fácil = This makes it easier
• La música hace que me concentre mejor = Music makes me concentrate better

So the subjunctive here is triggered by hacer que.

Because Spanish usually leaves out subject pronouns when the verb ending already makes the subject clear.

The ending -emos here shows nosotros:

• recordemos = we remember, in the present subjunctive

So Spanish does not need to say nosotros recordemos unless it wants extra emphasis or contrast.

Both can mean to remember, but they are used differently.

• recordar algo = to remember something
• acordarse de algo = to remember something

So with vocabulario, both are possible in meaning, but the grammar changes:

• recordemos mejor el vocabulario
• nos acordemos mejor del vocabulario

Recordar is a bit more direct here because it takes a direct object, el vocabulario, with no de.

Because mejor is the correct comparative form of bien.

• bien = well
• mejor = better

So:

• recordemos mejor = we remember better

Más mejor is incorrect in standard Spanish, just like more better is incorrect in English.

Más bien is a different expression and usually means something like rather or more accurately, so it would not fit here.

Spanish often uses the definite article with general nouns where English might not.

So el vocabulario here means vocabulary in a general sense, not necessarily the vocabulary in a very narrow English sense.

This is very common:

• Me gusta la música = I like music
• Estudio el español in some contexts = I study Spanish
• Recordar el vocabulario = remember vocabulary

The article sounds natural in Spanish.

Because the clause introduced by que is essential to the sentence. It tells you what the graph demonstrates.

Spanish normally does not put a comma before que in this kind of structure:

• El estudio muestra que...
• Creo que...
• Vemos que...

A comma would usually be wrong here.

Not in this exact structure.

After hace que, you need a conjugated verb, and because of the trigger, it is usually in the subjunctive:

• hace que recordemos

If you wanted another structure, you would have to rewrite the sentence, for example:

• Estudiar un poco cada día nos ayuda a recordar mejor el vocabulario

That uses ayudar a + infinitive, which is a different construction.

They are very close, but demuestra sounds a bit stronger and more formal.

• muestra = shows
• demuestra = demonstrates, proves more clearly

So Este gráfico demuestra que... suggests the graph provides fairly solid evidence, not just a casual observation.