Question

which type of gene is most likely to be widely expressed in the body of someone who has a superficial scrape?
the gene that controls the production of stem cells
the gene that controls the production of skin cells
the gene that controls the production of red blood cells
the gene that controls the production of cardiac cells

Explanation:

A superficial scrape affects the skin. Skin cells are needed for repair. Stem cells (general), red blood cells (blood - related), and cardiac cells (heart - related) are not directly relevant to skin repair.

Answer:

the gene that controls the production of skin cells