In human males, the testes lie in the scrotum, because it helps in the

Options

A. process of mating
B. formation of sperm
C. easy transfer of gametes
D. All of these

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks why the testes in human males are located in the scrotum.

2. **Identifying the Structure**: The scrotum is a bag-like structure that holds the testes. It is located outside the abdominal cavity.

3. **Function of the Testes**: The primary functions of the testes are to produce sperm and the male sex hormone, testosterone.

4. **Temperature Requirement for Sperm Production**: Sperm production requires a temperature that is about 2 to 3 degrees Celsius lower than the normal body temperature.

5. **Role of the Scrotum**: The scrotum helps maintain this lower temperature by keeping the testes outside the body, which is crucial for effective sperm production.

6. **Conclusion**: Therefore, the testes lie in the scrotum because it helps in maintaining the appropriate temperature for sperm formation.

7. **Final Answer**: The correct answer is that the scrotum helps in the formation of sperm by maintaining a temperature that is 2 to 3 degrees Celsius lower than the normal body temperature.

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