Hypothermia occurs when

a. a low internal body temperature interferes with the body's ability to regulate vital processes.
b. a person's fat stores become depleted.
c. a person exercises outdoors in extreme heat.
d. there's a dangerously low level of vitamin b in the body.

I believe the answer would be A but iam not sure

Your answer is A. think about what would happen if you fall into a frozen lake your body would immediately react to try to warm your body to keep your heart and vital organs alive.

Bmust be the answer, as technically all organs move, so a is incorrect. all organs are made of different types of cells, so that isn’t a problem, so c is also incorrect. human hearts are very similar to many other animals’ hearts, so d is also incorrect, yet the heart is made of muscle, which is hard to grow in the lab so it would be correct to say b