Positive nitrogen balance occurs when:a.a person follows a strict weight reducing dietb.a child growsc.a person has an infectiond.a person has burns

Positive nitrogen balance occurs when:

a. A person follows a strict weight reducing diet - This is incorrect. A strict weight reducing diet often leads to a negative nitrogen balance as the body breaks down muscle for energy, leading to a loss of nitrogen.

b. A child grows - This is correct. During growth, the body is building new tissues, which requires protein. Protein is made up of nitrogen-containing amino acids, so a growing child will have a positive nitrogen balance.

c. A person has an infection - This is incorrect. Infections often lead to a negative nitrogen balance because the body uses protein at a faster rate to fight off the infection.

d. A person has burns - This is incorrect. Severe burns can lead to a negative nitrogen balance as the body breaks down muscle tissue to help heal the burns.

So, the correct answer is b. A child grows.