Question

Which blood vessel is labeled B, and what is its function?

the superior vena cava; transports oxygen-rich blood to the bottom half of the body
the pulmonary vein; carries oxygen-rich blood from the lung to the left atrium of the heart
the coronary artery; provides blood to the walls of the heart
the inferior vena cava; transports oxygen-rich blood to the top half of the body

Answer 1

the pulmonary vein

Step-by-step explanation:

Answer 2

I cannot find the picture, so I gonna proceed by elimination:
1 and 4 are false sentences: blood veins transport deoxygenated blood.
2 and 3 are both correct sentences, so now you need to see where the location of the labeled blood vessel is:
If it is on the heart, then it's probably a coronary artery.
If it is the vessel between the lung and the heart, then it is probably an pulmonary vein.