Which statement about early adulthood physical development is accurate?

Which statement about early adulthood physical development is accurate?

• A. Cardiovascular fitness peaks in midlife
• B. The reproductive system, motor ability, strength, and lung capacity are at their best
• C. Hearing declines earlier than expected
• D. Cognitive abilities peak in late adolescence

Answer: (B)

In early adulthood, multiple body systems operate at near-peak capacity. The reproductive system, motor skills and coordination, muscular strength, and lung capacity are typically at their best during this period, so a statement placing these areas at their peak matches how physical development usually unfolds. Other timing claims don’t fit as well: cardiovascular fitness is generally highest in the 20s and then declines gradually, rather than peaking in midlife; hearing loss tends to become noticeable later in life; and cognitive performance follows a different trajectory that isn’t defined by late adolescence.

In early adulthood, multiple body systems operate at near-peak capacity. The reproductive system, motor skills and coordination, muscular strength, and lung capacity are typically at their best during this period, so a statement placing these areas at their peak matches how physical development usually unfolds.

Other timing claims don’t fit as well: cardiovascular fitness is generally highest in the 20s and then declines gradually, rather than peaking in midlife; hearing loss tends to become noticeable later in life; and cognitive performance follows a different trajectory that isn’t defined by late adolescence.