Because she is so active, cardiovascular fitness is important to vicky. she learns that hemoglobin is an important globular protein molecule in red blood cells that carries oxygen, and that adequate dietary protein and the mineral are needed for her body to build enough hemoglobin.

The answer is Iron, this is the important mineral that she needs to obtain as this will help her in her ways to cardiovascular fitness as this mineral helps the hemoglobin to build in her body and for her t be able to get enough nutrients.

the answer is "a.) well–developed vascular system."

explanation:

the answer would be d : p