toryou wo erabu.

It’s read とりょう を えらぶ.

• 塗料（とりょう） = paint, coating material, paint substance
• を = object marker
• 選ぶ（えらぶ） = to choose, to select

So the structure is literally paint/coating material + object marker + choose.

を marks the direct object of the verb.

In this sentence, the thing being chosen is 塗料, so it takes を:

• 塗料を選ぶ = choose paint / choose a coating material

This is very similar to English choose X, where X is the thing being chosen.

Japanese normally follows Subject–Object–Verb order, so the verb often comes at the end of the sentence.

Here:

• 塗料 = the thing being chosen
• を = marks it as the object
• 選ぶ = the action

So the sentence ends with the verb, which is completely normal in Japanese.

選ぶ is the dictionary form of the verb. In Japanese, this form can express several ideas depending on context, including:

• a general statement: choose paint
• a habitual action: (someone) chooses paint
• future action: will choose paint

Japanese does not mark future tense the way English does, so the exact time often depends on context.

Japanese often leaves out the subject when it is already understood from context.

So 塗料を選ぶ could mean:

• I choose paint
• You choose paint
• We choose paint
• (Someone) chooses paint

The sentence is natural even without a subject. Japanese frequently omits information that the listener can figure out.

Not exactly.

塗料（とりょう） is a more general or technical word for coating material, paint, or finish. It can refer to paint in a broader, more professional, or industrial sense.

ペンキ is a very common everyday word for paint, especially the kind people use for painting walls, wood, and so on.

So:

• 塗料 = broader / more technical
• ペンキ = more casual / everyday

Depending on context, both may be translated as paint, but 塗料 sounds more formal or specialized.

Not by itself.

塗料 means the paint or coating material itself, not specifically the color. So 塗料を選ぶ means choosing the type or kind of paint/coating.

If you want to say choose the color, you would more naturally say:

• 色を選ぶ = choose a color

Of course, in real life choosing paint may also involve choosing color, but the Japanese wording here focuses on the paint/coating material.

Yes. 塗料を選ぶ。 is a complete sentence in Japanese.

Even though it is short, it is grammatically complete because it contains:

• an object: 塗料
• an object marker: を
• a verb: 選ぶ

Japanese sentences can be very short when the context is clear.

Yes, very naturally.

Because it is in dictionary form, 塗料を選ぶ could appear as:

• a simple statement
• a heading in a manual
• a step in instructions
• a title, like Choosing Paint

For example, in a guide, 塗料を選ぶ might mean something like Choose the paint or Selecting paint.

Both can mean to choose or to select, but the nuance is different.

• 選ぶ（えらぶ） = common, natural, everyday verb
• 選択する（せんたくする） = more formal, abstract, or technical

So 塗料を選ぶ sounds very natural in normal Japanese.
塗料を選択する is possible, but it sounds more formal or stiff.

The polite form is:

• 塗料を選びます。

Here, 選ぶ becomes 選びます.

Compare:

• 塗料を選ぶ。 = plain form
• 塗料を選びます。 = polite form

The meaning stays basically the same; only the level of politeness changes.

That is just how the particle works in modern Japanese.

The object particle is written as を, but in modern pronunciation it is usually said as お.

So:

• written: 塗料を選ぶ
• pronounced: とりょう お えらぶ

This is a special feature of Japanese spelling that learners just need to get used to.

Yes, it can be written as:

• とりょうをえらぶ

But in normal writing, especially outside very beginner materials, 塗料を選ぶ is more standard because 塗料 and 選ぶ are common kanji words.

Using kanji makes the meaning easier to recognize once you know the characters.

塗料 is a noun.

In this sentence:

• 塗料 = noun
• を = particle
• 選ぶ = verb

So the sentence has a very basic and common Japanese pattern:

noun + を + verb

No, not if you want the same meaning.

• 塗料を選ぶ = choose the paint
• 塗料が選ぶ would make 塗料 the subject, meaning something like the paint chooses..., which does not make sense here

So を is correct because 塗料 is the thing being chosen, not the thing doing the choosing.