In human males, the testes lie in the scrotal sacs outside the body because it helps in the :

Options

A. process of mating
B. formation of sperms
C. easy transfer of sperms
D. all the above

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks why the testes in human males are located in the scrotal sacs outside the body.

2. **Identifying the Function of Testes**: The primary function of the testes is the production of sperm, which are the male gametes.

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

4. **Role of the Scrotal Sacs**: The scrotal sacs provide an external environment for the testes, allowing them to maintain the necessary lower temperature for effective sperm production.

5. **Evaluating the Options**: The options provided are:
- A) Process of mating
- B) Formation of sperms
- C) Easy transfer of sperms
- D) All of the above

6. **Determining the Correct Answer**: Since the primary reason for the testes being located outside the body is to facilitate the formation of sperm at a lower temperature, the best answer is option B) Formation of sperms.

7. **Conclusion**: Therefore, the correct answer to the question is that the testes lie in the scrotal sacs outside the body because it helps in the formation of sperms.

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