Sonia is studying where oxygen goes in the body. She investigates how oxygen moves from the bloodstream Into the cells. Based on this
evidence which structure is Sonia most likely to examine in this work?
A) the veins
B) the heart
C) the capillaries
D) the lymph nodes

A) the veins.

Explanation:

The movement of oxygen through the body is crucial for maintaining life in the body. In the body, oxygen is absorbed in the lungs and then further spread to the body. The body must be continuously supplied with oxygen through the bloodstream because there are no oxygen reserves in the body. Circulating oxygen through the body is a prerequisite for the health of the organism, the function of the brain, heart, and all other organs.