A) This choice is correct. As individuals age, the risk of peripheral vascular diseases increases due to several factors, including the weakening of arterial walls and the accumulation of plaque in the arteries (atherosclerosis). Aging is associated with changes in blood vessels, such as decreased elasticity and increased stiffness, which can contribute to the development of peripheral vascular diseases.

B) This choice is incorrect because while physical fitness can influence the risk of cardiovascular diseases, age-related changes in blood vessels can still increase the risk of peripheral vascular diseases, even in physically fit individuals.

C) This choice is incorrect because the risk of peripheral vascular diseases does not remain stable with no significant changes. Aging is associated with various physiological changes that can impact cardiovascular health and increase the risk of peripheral vascular diseases.

D) This choice is incorrect because while gender and ethnicity can influence the risk of certain conditions, age is a significant independent risk factor for the development of peripheral vascular diseases. The age-related changes in blood vessels apply to individuals of all genders and ethnicities.

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