Q: Fact 1: Constriction occurs when the muscular walls of blood vessels contract. Fact 2: Cocaine also tightly squeezes, or constricts, the coronary arteries that feed blood to the heart. Given the two facts above, what occurs when the muscular walls of blood vessels contract?

Choose from: A. Dehydration B. rapid expansion C. smooth skin D. smoking tobacco E. loose bumping F. pinched nerves G. tight sqeezing H. movement
A:
G.