Questa strategia evita uno svantaggio.

Because strategia is a feminine singular noun in Italian, and demonstratives must agree with the noun they describe.

• questo = this, for masculine singular
• questa = this, for feminine singular

So:

• questa strategia = this strategy

Even though strategy is not obviously feminine in English, in Italian strategia is feminine.

A very common clue is the ending -a, which often marks a feminine singular noun in Italian.

So:

• la strategia = the strategy
• questa strategia = this strategy

This is not true for every noun in Italian, but it is a very common pattern.

Evita is the third person singular present indicative of evitare.

That means it can mean:

• avoids
• is avoiding (depending on context, though simple present is the most direct reading)

Here it matches questa strategia, which is third person singular:

• Questa strategia evita... = This strategy avoids...

Italian usually does not need a helper verb like do / does for normal affirmative sentences.

English:

• This strategy avoids a disadvantage.

Italian:

• Questa strategia evita uno svantaggio.

The verb evita already contains the subject information, so there is no separate word for does.

Because svantaggio begins with s + consonant (sv-), and masculine singular nouns starting with that sound pattern usually take uno, not un.

So:

• uno svantaggio
• uno studente
• uno specchio

But:

• un libro
• un problema

This is a standard article rule in Italian.

Svantaggio means disadvantage.

It is a masculine singular noun:

• lo svantaggio = the disadvantage
• uno svantaggio = a disadvantage

The plural is:

• gli svantaggi = the disadvantages

Because questa already means this, so it fills the determiner slot that the would normally fill.

You usually say:

• la strategia = the strategy
• questa strategia = this strategy

You do not normally say la questa strategia in standard Italian.

It could be added in some contexts, but it is usually unnecessary and often sounds less natural.

Italian commonly leaves subject pronouns out when the verb ending already makes the subject clear.

So the most natural sentence is:

• Questa strategia evita uno svantaggio.

Adding a pronoun would usually be for emphasis, contrast, or a very specific stylistic reason.

The normal, neutral word order is:

• Questa strategia = subject
• evita = verb
• uno svantaggio = direct object

So:

• Questa strategia evita uno svantaggio.

Italian does allow some flexibility in word order, but this version is the most straightforward and natural for a simple statement.

No. Evitare normally takes a direct object with no preposition.

So you say:

• evitare uno svantaggio = to avoid a disadvantage
• evitare un problema = to avoid a problem

Not:

• evitare a uno svantaggio
• evitare di uno svantaggio

It is pronounced roughly EH-vee-ta.

A few useful points:

• e in evita is a clear Italian e
• v is pronounced like English v
• t is a clean dental/alveolar t, crisper than in many English accents

So:

• e-vi-ta

Sometimes in context, yes. The core meaning of evitare is to avoid, but in natural English translation it can sometimes come out as prevent depending on the situation.

Still, the most direct meaning is:

• Questa strategia evita uno svantaggio.
• This strategy avoids a disadvantage.

If the idea is more strongly stopping something from happening, Italian might also use other verbs depending on context.

If both the subject and the object were plural, you could say:

• Queste strategie evitano degli svantaggi.

Changes:

• questa → queste because the noun becomes feminine plural
• strategia → strategie
• evita → evitano
• uno svantaggio → degli svantaggi

A more literal plural with the same structure is possible, but article choice in plurals can vary depending on style and meaning.