In research, it is proved that in old age one should take more quantity of proteins in the diet than any other group of food. Which of the following justifies this?

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A Proteins help to repair and build muscles. In old age, muscle growth increases, hence protein intake should be more.
B Proteins help to repair and build muscles. In old age, muscles become weak, hence protein intake should be more.
C Proteins give energy to the body. In old age, the body needs more energy to work, hence protein intake should be more.
D Proteins give energy to the body. In old age, the body uses stored fat hence, protein intake should be more.

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Answer: B. Proteins help to repair and build muscles. In old age, muscles become weak, hence protein intake should be more.

Proteins are body-building nutrients that help repair and maintain muscles and tissues. As people grow older, their muscles become weaker and require repair and maintenance. Therefore, a higher intake of proteins helps maintain muscle strength and body tissues in old age.

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In research, it is proved that in old age one should take more quantity of proteins in the diet than any other group of food. Which of the following justifies this?

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