Question

the lymphatic system...? a secretes hormones that regulate processes such as growth, reproduction, and nutrient use metabolism by body cells b responds to internal and external changes by activating appropriate muscles and glands c produces heat d synthesizes vitamin d e picks up fluid leaked from blood vessels and returns it to the blood

Explanation:

The lymphatic system's main function is to collect and return interstitial fluid (leaked from blood vessels) to the bloodstream.

Answer:

E. picks up fluid leaked from blood vessels and returns it to the blood