During early adulthood, _____.
A) cardiovascular capacity can be increased with regular exercise
B) the heart muscles become more flexible, increasing the maximum heart rate
C) the cardiovascular system does not undergo any change
D) the cardiovascular system is at the highest risk of developing congenital heart diseases

Question

Quizplus · Accepted Answer

During early adulthood, the cardiovascular capacity can indeed be increased with regular exercise. This is a period where physical capabilities can still be enhanced, and regular exercise contributes significantly to cardiovascular health. Choices B, C, and D are incorrect because the heart muscles do not naturally become more flexible in a way that increases maximum heart rate without specific training, the cardiovascular system does undergo changes (especially with lifestyle factors), and the highest risk of developing congenital heart diseases is not during early adulthood as congenital means present from birth.

During Early Adulthood, _____