Menstrual phase is followed by

Options

A. luteal phase and lasts for about 13 days follicular phase and lasts for about 13 days
B. follicular phase
C. Fertilization, cleavage, morula, zygote, blastula, gastrula
D. Implantation

Explanation

### Step-by-Step Solution

1. **Understanding the Menstrual Cycle**: The menstrual cycle is typically around 28 days long and consists of several phases. The first phase is the menstrual phase.

2. **Duration of Menstrual Phase**: The menstrual phase lasts for about 5 to 7 days. This is when the uterine lining sheds if there is no fertilization.

3. **Identifying the Next Phase**: After the menstrual phase, the next phase is the follicular phase. This phase begins after the menstrual bleeding stops.

4. **Duration of Follicular Phase**: The follicular phase lasts approximately from day 7 to day 14 of the cycle. During this phase, follicles in the ovaries mature under the influence of hormones.

5. **Hormonal Changes**: The follicular phase is characterized by the secretion of Follicle Stimulating Hormone (FSH) and the development of estrogen levels, which help in the maturation of the follicles.

6. **Conclusion**: Therefore, the menstrual phase is followed by the follicular phase.

### Final Answer
The menstrual phase is followed by the **follicular phase**.

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