Question

Where do the respiratory and circulatory systems meet?

A. In the heart
B. In the muscles
C. In the lungs
D. In the brain

Answer 1

The respiratory and circulatory systems meet in the lungs so the answer would be C.

Answer 2

Option C. The lungs.

Step-by-step explanation:

Alveolis are the air sacs in the lungs which main function is to get oxygen into your bloodstream and carbon dioxide leaves the blood.

The alveolis are located in the lungs, and it's where the respiratory and circulatory systems meet, for the reasons stated before.

Therefore, the correct option is Option C.