Sexual reproduction is considered more beneficial than asexual reproduction because

Options

A. it is not affected by adverse environmental conditions
B. fertilisation is a chance factor
C. it rapidly multiplies the population
D. it assists in evolution by producing variations.

Explanation

**Step-by-Step Solution:**

1. **Understanding Sexual Reproduction**: Sexual reproduction involves the combination of genetic material from two parents, typically a male and a female. This process leads to offspring that have genetic variations.

2. **Evaluating the Options**:
- **Option A**: "It is not affected by adverse environmental conditions." This statement is incorrect. Sexual reproduction can be influenced by environmental factors, as seen in cases like the Bhopal gas tragedy, which affected human reproductive health.

- **Option B**: "Fertilization is a chance factor." This is also incorrect. Fertilization is a specific process that occurs in sexual reproduction and is not merely a chance event.

- **Option C**: "It rapidly multiplies the population." This statement is misleading. Sexual reproduction is generally slower than asexual reproduction and does not lead to rapid population growth.

- **Option D**: "It assists in evolution by producing variations." This option is correct. Sexual reproduction introduces genetic diversity among offspring, which is crucial for evolution and adaptation.

3. **Conclusion**: The most beneficial aspect of sexual reproduction compared to asexual reproduction is that it assists in evolution by producing variations among individuals. This genetic variation is essential for the survival and adaptability of species over time.

4. **Final Answer**: Therefore, the correct answer is **Option D**: "It assists in evolution by producing variations."

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