Answer:
C
Explanation:
Because she wanted to provide these qualities to people when they need
them the most
The primary function of red blood cells, or erythrocytes, is to carry oxygen from the lungs to the body tissues and carbon dioxide as a waste product, away from the tissues and back to the lungs. Hemoglobin (Hgb) is an important protein in the red blood cells that carries oxygen from the lungs to all parts of our body.
You need to know the area your in, build shelter on a well leveled ground, find a fast running stream or river near by, and know the hunting grounds there for animal population for food.
Bad but thanks for asking