Question

1. what are capillaries?

chambers of the heart that pump blood throughout the body
the liquid part of the blood that transports hormones
vessels through which nutrient and gas exchange take place

Explanation:

Capillaries are the smallest blood vessels. Their thin walls allow for the exchange of nutrients, oxygen, carbon dioxide, and other substances between the blood and the surrounding tissues. Chambers of the heart that pump blood are the ventricles. The liquid part of the blood that transports hormones is plasma. So the correct description of capillaries is that they are vessels through which nutrient and gas exchange take place.

Answer:

C. vessels through which nutrient and gas exchange take place