I believe that would be B.
Correct me if wrong.
The correct answer is microglia.
<span>Microglia is glial cells found in the central nervous system with the protective role. Because they are the resident macrophage cells, they act as the first and main form of active immune defense. Microglia is constantly cleaning the CNS for plaques, damaged or unnecessary neurons, and infectious agents, like viruses or other microorganisms.</span>
Medulla Oblangata is the part of the brain that controls your heart beat
<span>A battered person is one who have probably experienced a physical abuse. The most appropriate thing to do is to take the client from an environment where there is a threat of danger and also any object that will cause any further harm to the client. This would include knifes, objects, guns and even people who are abusive to the client.</span>
