In a Graafian follicle:

Options

A. Many oocytes
B. Many sperms
C. A single oocyte
D. Site for egg fertilisation

Answer

### Step-by-Step Solution:

1. **Understanding the Graafian Follicle**: The Graafian follicle is the mature stage of the ovarian follicle, which is responsible for the production and release of oocytes (eggs) during the menstrual cycle.

2. **Role of Hormones**: The development of the Graafian follicle is influenced by hormones, particularly Follicle-Stimulating Hormone (FSH) and Luteinizing Hormone (LH). These hormones stimulate the growth and maturation of the follicle.

3. **Oocyte Release**: Upon maturation, the Graafian follicle undergoes a process called ovulation, where it releases a single oocyte (egg). This is a crucial step in the reproductive process, as it allows for the possibility of fertilization.

4. **Corpus Luteum Formation**: After the release of the oocyte, the remaining cells of the Graafian follicle transform into the corpus luteum. This structure is important as it secretes hormones such as estrogen and progesterone, which are essential for maintaining pregnancy if fertilization occurs.

5. **Conclusion**: Based on the above information, the correct answer to the question "In a Graafian follicle:" is that it releases a single oocyte.

### Final Answer:
The Graafian follicle releases a single oocyte.

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