Question

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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:

As a person grows from infancy to young adulthood, their body is developing, growing in size and muscle - mass, and being more active, which requires more calories. Once in old age, metabolic rate slows down and activity levels often decrease, so calorie needs do not increase further.

Answer:

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