Aaron is a healthy, 65-year-old man. compared with his 24-year-old son harry, aaron has much less brain volume. which of the following is most likely the reason for this difference?
a. harry has a lower number of synapses than aaron has.
b. aaron is experiencing shrinkage of neurons.
c. harry has reduced tree-like branching in the dendrites of his brain.

The correct answer is option B

b. Aaron is experiencing shrinkage of neurons.

Explanation:

Atrophy is a term used to describe lose of neurons in the brain and the connections between them. It is often associated with aging. As we grow old, our brain cells starts dying causing a shrinkage or reduction in brain volume. Atrophy can either be generalized (affecting all parts of the Brain) or focal(affecting a specific region of the brain).

The answer is: b. Aaron is experiencing shrinkage of neurons.

Explanation:

As you age, your brain and nervous system go through natural changes. The brain and spinal cord lose weight and neurons (atrophy).

Loss of brain volume, or "brain atrophy," refers to a decrease in the amount of brain tissue, including myelin and axons. You can also lose a part of the water contained in the brain and in the spaces around it.

The answer is: b. Aaron is experiencing shrinkage of neurons.