Answer the following question given this paragraph: 

Protozoa that cause giardiasis are spread by contaminated food or water. They live inside the intestine. They may cause abdominal pain, fever, and diarrhea.


Q: How are protozoa that cause giardiasis spread?

 Choices:

- insects

- starch and water

- lakes and rivers

- food and water

A:
food and water
