Answer: A, C, and D
Explanation: The brain is basically the main nervous system, it travels down the spinal cord, and the sensory neurons are part of this system as well because nervous system in your limbs help you feel.
The main components are the blood cells such as white blood cells, red blood cells, and platelets. The other components represent additional information about these cells including their size, color, function, and maturity.
Answer:
2 times a day for 7-14 days.
Explanation: