What structures in the cardiovascular system connect arteries to veins?

A) valves

B) heart

C) capillaries

D) lymph

The correct answer choice is C.

The primary blood vessel that connects arterioles which appear after moving down the arteries blood vessel and the venoules which connect to the veins would be C. Capillaries, these are places where gas exchange takes place, essentially where O2 gas is moved into while CO2 moves out.