______ maintains the correct salt balance in the blood.AAldosteroneBPancreasCGrowth hormoneDProgesterone

The hormone that maintains the correct salt balance in the blood is Aldosterone.

Explanation:

Aldosterone is a steroid hormone produced by the adrenal glands, specifically in the zona glomerulosa. Its primary role is to regulate sodium and potassium levels in the body, which helps maintain blood pressure and fluid balance. Aldosterone promotes the reabsorption of sodium in the kidneys while facilitating the excretion of potassium. This regulation is crucial for homeostasis, especially in situations where the body needs to retain water and salts to maintain blood volume and pressure.

In contrast:

• Pancreas is an organ that regulates blood sugar levels through hormones like insulin and glucagon.
• Growth hormone primarily stimulates growth, cell reproduction, and cell regeneration.
• Progesterone is involved in regulating various functions in the female reproductive system, particularly during the menstrual cycle and pregnancy.

Thus, the correct answer is Aldosterone (Option A).