It is unusually cold outside as Madeline heads to the bus stop. Unfortunately, she did not realize how cold it was outside and did not bring a warm enough coat, and she finds herself very chilly. Luckily, her body has mechanisms to maintain heat in a cold environment and keep her vital organs safe, such as:
a
keeping more blood in the center of the body, where her vital organs are.
b
causing her muscles to freeze up to better block the cold air.
c
causing her body to sweat in order to stay warmer.
d
sending all the blood to her extremities to keep them warm.