Which of the following statements is true of aging?
A) As people age, the heart muscles grow more elastic, increasing the maximum heart rate.
B) Regular exercise decreases cardiovascular and respiratory capacity from what it was in early adolescence.
C) As people age, the immune system produces fewer white blood cells.
D) Fertility in both genders increases as early adulthood progresses.

Question

Quizplus · Accepted Answer

As people age, their immune system becomes less efficient, partly due to the production of fewer white cells, which are crucial for fighting off infections and diseases. This is a well-documented aspect of the aging process.

Which of the Following Statements Is True of Aging