Which statement best defines fertilization?
O A. The period of about 40 weeks when a developing embryo or fetus
is in the uterus
O
B. A fertilized egg that has begun cell division
O
C. The joining of an egg and a sperm
O
D. The process by which the uterus contracts to push the fetus out of
the woman's body through the vagina

Insulin is a peptide therapeutic used to manage type 1 diabetes, which affects more than 20 million people worldwide according to the international diabetes federation. a significant limitation to the broad distribution and use of insulin to treat type 1 diabetes is the fact that it must be administered by injection rather than orally. why is insulin administered by injection and not orally?