Q: How are protozoa that cause giardiasis spread?


Read this paragraph and choose the correct option from the provided answers:

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

 Choices:

- insects

- starch and water

- lakes and rivers

- food and water


A:
food and water