Multiple choice questions (MCQs)
choose the correct option
In the human female, menstruation can be deferred by the administration of

Options

A. FSH only
B. LH only
C. Combination of FSH and LH
D. Combination of estrogen and progesterone

Answer

To solve the question regarding what can defer menstruation in human females, we can break down the reasoning step by step:

### Step-by-Step Solution:

1. **Understanding Menstruation**: Menstruation is the shedding of the endometrial lining when there is no fertilization of the ovum. If the endometrium is retained, menstruation will not occur.

2. **Hormonal Influence**: The menstrual cycle is regulated by hormones, primarily involving the hypothalamus, pituitary gland, and ovaries. Key hormones include Follicle Stimulating Hormone (FSH), Luteinizing Hormone (LH), Estrogen, and Progesterone.

3. **Evaluating the Options**:
- **Option A: FSH (Follicle Stimulating Hormone)**: This hormone is responsible for the development of ovarian follicles. It does not play a direct role in delaying menstruation.
- **Option B: LH (Luteinizing Hormone)**: This hormone triggers ovulation. Like FSH, it does not delay menstruation.
- **Option C: Combination of FSH and LH**: Both hormones are essential for the menstrual cycle but do not have a role in delaying menstruation.
- **Option D: Combination of Estrogen and Progesterone**: Progesterone is crucial for maintaining the endometrial lining. When progesterone is present, it prevents the shedding of the endometrium, thus delaying menstruation.

4. **Conclusion**: The correct answer is **Option D: Combination of Estrogen and Progesterone**. This combination helps maintain the endometrial lining, preventing menstruation.

### Final Answer:
**D: Combination of Estrogen and Progesterone**