Which of the following words is the best close-up or most precise word A plant B zucchini C food D vegetables?

B. zucchini

The Word plant is very general. It could be a food plant...or a flower plant. It could be edible or inedible.

The Word food is also very general. We don't know if it is food from plants or animals.

The Word vegetables is more specific for both food and plant, but it could be any vegetable.

Zucchini is a close-up Word; it is very specific as a plant, a food, and a vegetable.