Question

how do nutritional needs change over time?
○ the number of calories needed increases throughout a person’s lifetime.
○ the number of calories needed increases from infancy to young adulthood.
○ the number of calories needed increases from young adulthood until old age.
○ the number of calories needed remains the same from young adulthood throughout old age.

Explanation:

To determine how nutritional (caloric) needs change over time, we analyze each option:

• The first option is incorrect because caloric needs do not increase throughout a lifetime (e.g., they typically decrease in old age).
• The second option is correct: From infancy to young adulthood, the body is growing and developing, so caloric needs increase (e.g., infants need calories for growth, children and teens for growth and activity, young adults for maintaining a larger, more active body).
• The third option is incorrect as caloric needs generally decrease from young adulthood to old age due to reduced activity and metabolic rate.
• The fourth option is incorrect because metabolic rate and activity levels change with age, so caloric needs do not remain the same from young adulthood to old age.

Answer:

B. The number of calories needed increases from infancy to young adulthood.