Negative feedback mechanism that maintains homeostasis?

Question

Which one of the following is NOT part of a negative feedback mechanism that maintains homeostasis?
a. Increased excretion of Na+ ions into the urine following consumption of salty pretzels.
b. Formation of glycogen in the liver immediately following a meal.
c. Movement of the baby through the cervix during childbirth.
d. Increased rate of breathing during and after exercise.
e. Vasoconstriction in the skin during exposure to cold.

I think it might be the baby one, but I'm not sure

Answer 1

c