If air and cloud were good conductor of electricity, then

Options

A. Lightning could occur with high intensity
B. Lightning could occur with lower intensity
C. Lightning could not occur at all.
D. None of these

Answer

To solve the question "If air and cloud were good conductors of electricity, then," we need to analyze the implications of air and clouds being good conductors.

### Step-by-Step Solution:

1. **Understanding Lightning Formation**:
- Lightning occurs due to the accumulation of electric charges in clouds. This charge separation creates a potential difference between the clouds and the ground or between clouds themselves.

2. **Role of Air as an Insulator**:
- In normal conditions, air acts as an insulator. This means it prevents the free flow of electric charges. As a result, charges can build up in the clouds, leading to a significant potential difference.

3. **Effect of Good Conductors**:
- If air and clouds were good conductors of electricity, the accumulated charges in the clouds would not remain there. Instead, they would flow freely through the air.

4. **Charge Transfer**:
- Since the charges would continuously transfer through the air (which is now a good conductor), there would be no significant charge accumulation in the clouds.

5. **Conclusion on Lightning**:
- Without charge accumulation, the conditions necessary for lightning to occur would not be met. Therefore, lightning could not occur at all.

### Final Answer:
- The correct option is **C: lightning could not occur at all**.

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