In vitro fertilization or test tube baby technique involves :

Options

A. Fertilization outside the female body
B. Development of foetus in a test tube
C. Both of these
D. None of these

Answer

**Step-by-Step Solution:**

1. **Definition of In Vitro Fertilization (IVF)**: In vitro fertilization, commonly known as the test tube baby technique, is a medical procedure used to treat infertility. It involves the fertilization of an egg by sperm outside the human body.

2. **Process of IVF**: The IVF process begins with the retrieval of eggs from the woman's ovaries. Simultaneously, sperm is collected from the male partner.

3. **Fertilization**: The collected eggs and sperm are then combined in a laboratory setting, specifically in a test tube, where fertilization occurs. This means that the sperm fertilizes the egg outside the female body.

4. **Embryo Development**: After fertilization, the resulting fertilized egg, now called an embryo, is monitored for a few days in the laboratory to ensure proper development.

5. **Transfer to Uterus**: Once the embryo reaches a suitable stage of development, it is then transferred into the uterus of the woman. This is where the embryo can implant and develop into a fetus, leading to pregnancy.

6. **Conclusion**: Therefore, the in vitro fertilization or test tube baby technique primarily involves fertilization occurring outside the female body, followed by the transfer of the fertilized egg to the uterus for further development.

**Final Answer**: In vitro fertilization or test tube baby technique involves fertilization outside the female body.

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