The correct answer is: D. no article
Apples are a type of fruit, and fruits are not typically preceded by an article. The only time an article would be used with "apple" is if it is being used in a specific context, such as "the apple on the table" or "I ate an apple."
Here are some examples of how "apple" can be used in a sentence without an article:
- Apples are good for you.
- I like apples.
- I ate an apple.
- Apples are red, green, or yellow.
- Apples grow on trees.
In each of these examples, "apple" is being used in a general sense. It is not referring to a specific apple or group of apples. Therefore, no article is needed.
