Question

the hormone that is released by the kidney that promotes the production of red blood cells is
a insulin
b thyroxin
c erythropoietin
d estrogen

Explanation:

• Insulin is produced by the pancreas and regulates blood - glucose levels.
• Thyroxin is produced by the thyroid gland and is involved in metabolism regulation.
• Erythropoietin (EPO) is a hormone produced by the kidneys. It acts on the bone marrow to stimulate the production of red blood cells.
• Estrogen is a female sex hormone mainly produced by the ovaries (in non - pregnant females) and has functions related to the female reproductive system and secondary sexual characteristics.

Answer:

C. erythropoietin