Infectious disease can be spread by which of the following?
a. food
b. water
c. food
d. alll of the above

I think the answers d because if someone doesnt wash their hands properly it goes into food and if a dead animal falls into a river that causes disease too

D because they are both ingested and processed in the body

gargle with salt water; gargling with warm salt water can soothe a scratchy throatsuck on a lozengetry otc pain reliefenjoy a drop of honeytry an echinacea and sage spraystay hydrateduse a humidifiergive yourself a steam shower

hope this !

feel free to mark as brainliest: )