What is ovulation?

Options

A. Fertilization of ovum by sperm
B. Release of egg into oviduct
C. The first menstrual cycle
D. The onset of puberty

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the definition of ovulation. It is important to clarify what ovulation means in the context of human biology.

2. **Evaluating Options**: The question provides several options to choose from regarding the definition of ovulation. We need to analyze each option to determine which one correctly defines ovulation.

3. **Option Analysis**:
- **Option 1**: "Fertilization of ovum by sperm." This option is incorrect because fertilization refers to the process where a sperm cell merges with an ovum, which occurs after ovulation.
- **Option 2**: "Release of egg into oviduct." This option is correct. Ovulation is the process where an egg (ovum) is released from the ovary into the oviduct.
- **Option 3**: "The first menstrual cycle." This option is incorrect because the first menstrual cycle refers to menarche, not ovulation.
- **Option 4**: "The onset of puberty." This option is also incorrect. The onset of puberty involves various physical changes, but it does not specifically define ovulation.

4. **Conclusion**: After evaluating all the options, we conclude that the correct definition of ovulation is the "release of egg into oviduct."

**Final Answer**: Ovulation is the release of an egg (ovum) from the ovary into the oviduct.

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