Assertion: Cataract is the condition on which lens become completely opaque.
Reason: In this condition, a person can see only near objects.

Options

A. If both assertion and Reason are true and the Reason is the correct explanation of the assertion.
B. If both assertion and Reason are true but the reason is not the correct explanation of the 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 "Cataract is the condition on which lens become completely opaque."
- Cataract is indeed a condition where the lens of the eye becomes cloudy or opaque, leading to impaired vision. This statement is true.

2. **Understanding the Reason**:
- The reason provided is "In this condition, a person can see only near objects."
- This statement is misleading. While cataract can affect vision, it does not specifically limit a person's ability to see only near objects. The inability to see distant objects is characteristic of myopia (nearsightedness), not cataract. Therefore, this statement is false.

3. **Evaluating the Relationship**:
- The assertion is true, while the reason is false.
- Since the reason does not correctly explain the assertion, we conclude that the assertion stands alone as true without the support of the reason.

4. **Final Conclusion**:
- Based on the evaluation, the correct answer is that the assertion is true and the reason is false.