B is the answer you are looking for!
The heart is located in the center of your chest so its basically like the head of a group, like the person in charge or leader some may say, the heart pumps blood every second into all sources, head, arms, legs, and etc, it helps keep things moving so nothing wont stop, it automatically pumps blood on its own but it can be stopped if u have a heart attack or serious cancer.
Answer:
fatigue, headache, sore throat or fever
Explanation:
it is an example of corrective action
The nervous send messages
