It's Your Birthday and You Splurge with a Big Slice

It's your birthday and you splurge with a big slice of chocolate cake,heavy on the icing.Shortly afterwards,your blood glucose levels rise until an endocrine mechanism (secretion of insulin) counteracts this rise and glucose levels decline.The initial change in blood glucose and insulin response that follows is an example of:

A) physiological constancy.
B) diffusion.
C) homeostasis.
D) positive feedback.
E) lack of homeostasis.