Assertion : The shape of the fish is such that water can flow around it easily and offers minimum resistance.
Reason : The head and tail of the fish are smalller than the middle portion of the body.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Assertion**: The assertion states that the shape of the fish allows water to flow around it easily, which minimizes resistance. This is true because fish have a streamlined body shape that reduces drag when moving through water.

2. **Understanding the Reason**: The reason provided is that the head and tail of the fish are smaller than the middle portion of the body. This is also true and is a characteristic of the streamlined shape. The smaller ends (head and tail) help in reducing the resistance faced by the fish as it swims.

3. **Connecting Assertion and Reason**: Both the assertion and reason are related. The streamlined shape (assertion) is a result of the head and tail being smaller than the middle portion (reason). This design allows fish to swim efficiently with minimal resistance.

4. **Conclusion**: Since both the assertion and the reason are true, and the reason explains why the assertion is true, we can conclude that the correct answer is that both the assertion and reason are true, and the reason is correct for the assertion.

**Final Answer**: Both assertion and reason are true, and the reason is correct for the assertion.

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