Test-tube' babies are born through a process called _________.

Options

A. incubation
B. menstruation
C. in vitro fertilization
D. internal fertilization

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the process through which test-tube babies are born.

2. **Identifying the Options**: The options given include:
- Incubation
- Maturation period
- In vitro fertilization

3. **Analyzing Each Option**:
- **Incubation**: This refers to the process of providing warmth for eggs to hatch, commonly seen in birds. It is not related to the birth of test-tube babies.
- **Maturation Period**: This is a biological term that describes the monthly cycle in female mammals where the ovum is released and, if not fertilized, is expelled from the body. This does not pertain to the process of creating test-tube babies.
- **In Vitro Fertilization (IVF)**: This is the correct process. It involves fertilizing an egg with sperm outside the body in a controlled environment (like a test tube). After fertilization, the resulting zygote is then implanted into the mother’s uterus for further development.

4. **Conclusion**: The correct answer to the question is **In Vitro Fertilization**.

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