Which of the following Venn diagrams indicates the best relation between Food, Bread and Wool?

Given: Food, Bread and Wool

On the basis of the relationship of the given words, the correct Venn diagram will be:

Bread is a type of Food (so Bread is a subset of Food).
Wool is not related to Food or Bread in the same way, as it is used for clothing.

Thus, the correct option is (a).