Which of the following words is best close-up word A plant B zucchini C food D vegetable?

* A plant is too broad. It encompasses many things, not just zucchini.

* C food is also too broad. It doesn't specify any particular type of food.

* D vegetable is a category, and while zucchini is a vegetable, it's not as specific as the word itself.

Zucchini is the most specific and direct term, making it the closest "close-up" word.