The test-tube baby programme employs which one of the following techniques ?

Options

A. Zygote intra Fallopian transfer (ZIFT)
B. Intra uterine insemination (IUI)
C. Gamete intra Fallopian trander (GIFT)
D. All of these

Explanation

To solve the question "The test-tube baby programme employs which one of the following techniques?", we will analyze the options provided and identify the correct technique associated with the test-tube baby program.

### Step-by-Step Solution:

1. **Understanding the Test-Tube Baby Program**:
- The test-tube baby program refers to assisted reproductive technologies that help couples conceive when they are unable to do so naturally. The primary technique used in this program is in vitro fertilization (IVF), where fertilization occurs outside the body in a controlled laboratory environment.

2. **Analyzing the Options**:
- **Zygote Intrafallopian Transfer (ZIFT)**: This technique involves the fertilization of an egg outside the body, followed by the transfer of the resulting zygote into the fallopian tube. This is a method used in the test-tube baby program.
- **Intrauterine Insemination (IUI)**: This technique involves placing sperm directly into the uterus, allowing fertilization to occur inside the body. This is not considered a test-tube baby method.
- **Gamete Intrafallopian Transfer (GIFT)**: In this method, both sperm and eggs are placed into the fallopian tube, where fertilization occurs naturally. This is also not a test-tube baby method as fertilization does not occur outside the body.
- **All of these**: This option suggests that all the previous methods are part of the test-tube baby program, which is incorrect.

3. **Identifying the Correct Answer**:
- Based on the definitions and explanations of each technique, the only method that aligns with the test-tube baby program is **Zygote Intrafallopian Transfer (ZIFT)**.

### Conclusion:
The correct answer to the question is **Zygote Intrafallopian Transfer (ZIFT)**.

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