Answer the following question given this paragraph: 

Angiosperms are important to humans in many ways, but the most significant role of angiosperms is as food. Wheat, rye, corn, and other grains are all harvested from flowering plants. Starchy foods, such as potatoes, and legumes, such as beans, are also angiosperms. And, as mentioned previously, fruits are a product of angiosperms that increase seed dispersal and are nutritious.


Q: What are angiosperms most important function to humans?

 Choices:

- oxygen production

- gasoline

- water filtration

- food

A:
food
