Assertion : Consciousness is a defining property of living organisms.
Reason : Human being is the only organism that has self consiousness.

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 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 "Consciousness is a defining property of living organisms." This means that consciousness is a characteristic that distinguishes living organisms from non-living entities.

2. **Evaluating the Reason**: The reason provided is that "Human being is the only organism that has self-consciousness." Self-consciousness refers to the awareness of oneself as an individual, distinct from others.

3. **Analyzing the Assertion**: Consciousness indeed is a defining property of all living organisms, including plants and animals. Living organisms have the ability to sense their environment and respond to stimuli, which is a form of consciousness.

4. **Analyzing the Reason**: While it is true that humans possess self-consciousness, it is not accurate to claim that they are the only organisms with consciousness. Other animals also exhibit forms of consciousness, though they may not possess self-consciousness to the same degree as humans.

5. **Conclusion**: Both the assertion and reason are true statements. However, the reason does not correctly explain the assertion because consciousness is not exclusive to humans; it is a property of all living organisms.

6. **Final Answer**: The correct option is: "Both assertion and reason are true but reason is not the correct explanation of assertion."

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