During pregnancy one of the following is excreted

Options

A. Progesterone
B. LH
C. FSH
D. HCG

Answer

**Step-by-Step Solution:**

1. **Understanding the Context**: During pregnancy, various hormones are produced and excreted to support the developing fetus and maintain the pregnancy.

2. **Identifying the Key Hormone**: The primary hormone that is excreted during pregnancy is Human Chorionic Gonadotropin (HCG). This hormone is crucial for confirming pregnancy.

3. **Source of HCG**: HCG is initially secreted by the trophoblastic cells of the developing embryo. As pregnancy progresses, it is produced by the placenta, which acts as a temporary endocrine gland.

4. **Role of HCG**: The main function of HCG is to stimulate the corpus luteum to produce progesterone. Progesterone is essential for maintaining the endometrium (the lining of the uterus) and supporting the pregnancy.

5. **Other Hormones During Pregnancy**: While HCG is the key hormone, the placenta also secretes other hormones such as Human Placental Lactogen (HPL), progesterone, and relaxin, but HCG is the hormone specifically associated with the early stages of pregnancy.

6. **Conclusion**: Therefore, during pregnancy, the hormone that is excreted is Human Chorionic Gonadotropin (HCG).

**Final Answer**: Human Chorionic Gonadotropin (HCG) is excreted during pregnancy.

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