Which of the following artificial techniques uses cryogenically preserved sperm?

Options

A. Artificial insemination
B. GIFT
C. Vasectomy
D. Superovulation

Answer

To solve the question "Which of the following artificial techniques uses cryogenically preserved sperm?", we can follow these steps:

### Step 1: Understand the Question
The question is asking about artificial techniques that utilize sperm that has been preserved at very low temperatures (cryogenically). This is often done to store sperm for future use in reproductive technologies.

### Step 2: Analyze the Options
We need to evaluate each option provided to determine which one uses cryogenically preserved sperm.

1. **Artificial Insemination**: This technique involves the deliberate introduction of sperm into a female's reproductive tract (cervix or uterus) to achieve pregnancy. Cryogenically preserved sperm can be used in this method, making this option a strong candidate.

2. **GIFT (Gamete Intrafallopian Transfer)**: This technique involves transferring both sperm and eggs into the fallopian tubes of a female. It does not specifically require cryogenically preserved sperm, as it typically uses fresh gametes.

3. **Vasectomy**: This is a surgical procedure for male sterilization and does not involve the use of sperm for artificial reproduction. Therefore, it is not relevant to the question.

4. **Superovulation**: This refers to a process where a female is stimulated to produce multiple eggs in one cycle. It does not involve the use of sperm, cryogenically preserved or otherwise.

### Step 3: Conclusion
Based on the analysis, the only option that uses cryogenically preserved sperm is **Artificial Insemination**.

### Final Answer
The correct answer is **Artificial Insemination**.

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