Question

control many of the body’s functions.

Explanation:

Villi are small finger - like projections in the intestine for absorption. Endorphins are neurotransmitters related to pain relief and mood. Hormones are chemical messengers that regulate many body functions like growth, metabolism, and reproduction. So the correct option is Hormones.

Answer:

Hormones (the option that should be selected to complete the sentence "____ control many of the body’s functions" is Hormones)