Which of the following statements regarding age-related changes in the nervous system is correct?
A. Because of a decrease in the number of brain cells, a person's level of intelligence decreases with age.
B. The metabolic rate in the brain increases with age, but the consumption of oxygen decreases significantly.
C. Interconnections between brain cells often prevent a loss of knowledge or skill, despite a loss of neurons.
D. Generally speaking, the brain increases in size by 10% to 20% by the time a person reaches 80 years of age.
Answer: C. Interconnections between brain cells often prevent a loss of knowledge or skill, despite a loss of neurons.
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