Name the hormone secreted by corpus luteum.

Explanation

**Step-by-Step Solution:**

1. **Understanding Hormones**: Begin by recognizing that hormones are chemical substances produced by endocrine glands in the body. They are secreted directly into the bloodstream and transported to target organs to exert their effects.

2. **Identifying the Corpus Luteum**: The corpus luteum is a temporary endocrine structure in the ovaries that forms after ovulation. It plays a crucial role in the menstrual cycle and in maintaining early stages of pregnancy.

3. **Hormone Secreted by Corpus Luteum**: The primary hormone secreted by the corpus luteum is **progesterone**.

...