Question

what is the main purpose of negative feedback mechanisms?
to continue the process indefinitely
to reverse the action of a process
to accelerate the process

Explanation:

Negative feedback mechanisms work to counter - act changes and restore a system to its original state or a set - point. They reverse the action of a process to maintain stability. For example, in the human body, when body temperature rises, negative feedback mechanisms kick in to lower it back to normal.

Answer:

to reverse the action of a process