Question

I will give brain to the correct answer!

Which statement best explains how sewage systems help fight the spread of disease?

A. They carry antibiotics that kill pathogens

B. They carry human waste to treatment facilities away from cities

C. They kill animals that spread pathogenic bacteria

D. They add chlorine to drinking water before it is transported to homes.​

Answer 1

Step-by-step explanation:

As I think option D is the correct one.

Answer 2

b

Step-by-step explanation:

a p e x