Choose the most appropriate answer.
Internal fertilization occurs
(i) in female body.
(ii) outside female body.
(iii) in male body
(iv) outside male body.

Options

A. in female body
B. outside female body.
C. in male body
D. outside male body.

Explanation

**Step-by-Step Solution:**

1. **Understanding Fertilization**: Fertilization is the process where the male and female gametes (sperm and egg) fuse together. This fusion is called syngamy, resulting in the formation of a diploid cell known as the zygote.

2. **Types of Fertilization**: There are two main types of fertilization:
- **Internal Fertilization**: This occurs when the fusion of gametes happens inside the female body.
- **External Fertilization**: This occurs when the fusion of gametes happens outside the female body, typically in the external environment such as water.

3. **Identifying Internal Fertilization**: The question asks where internal fertilization occurs. Based on the definition, internal fertilization occurs inside the female body.

4. **Evaluating the Options**:
- (i) In female body: This is correct as internal fertilization occurs here.
- (ii) Outside female body: This describes external fertilization, not internal.
- (iii) In male body: Fertilization does not occur in the male body.
- (iv) Outside male body: This also does not describe internal fertilization.

5. **Conclusion**: The most appropriate answer is (i) in female body.

**Final Answer**: (i) in female body.

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