Answer:
There are <em><u>four types of neuroglia</u></em> found within the central nervous system:
<u>Astrocytes</u> :
It maintains the blood brain barrier and preserve the chemical environment by recycling ions and neurotransmitters.
<u>Oligodendrocytes</u> :
The myelinate axons in the central nervous system and provide an overall structural framework.
<u>Ependymal cells</u> :
The line ventricles (brain) and central canal (spine) and are involved in the production of cerebrospinal fluid.
<u>Microglia</u> :
It removes cell debris, wastes and pathogens via phagocytosis.
Answer: Active
Explanation:
The goal setting, process assessment and time management can be defined as the active process which is required to be planned before the execution of the goals.
The goal should first be decided in order to fulfill it. Based on the goal, time management is done to execute the whole process.
The assessment techniques should also be decided in order to known how much efforts is required to reach the goal. These are active gauges that is used for the goal achievement.
I believe the answer is
A. Retinol
