Question

red blood cells and white blood cells are responsible for nourishing and cleansing the body. which word, if it replaced the word
ourishing\ in the sentence above, would change the meaning of the sentence? a feeding b sustaining c supplying d protecting

Explanation:

"Nourishing" means providing food or nutrients. "Feeding", "sustaining", and "supplying" are related to providing something necessary for life - like nutrients. "Protecting" has a different meaning, it is about safeguarding from harm, not about providing nourishment.

Answer:

D. protecting