Which one of the following represents a renewable source of energy?

Options

A. Petroleum
B. Coal
C. Nuclear fuel
D. Trees

Answer

To determine which option represents a renewable source of energy, we can follow these steps:

### Step 1: Understand Renewable Resources
Renewable resources are those that can be replenished naturally over time and can be used repeatedly. Examples include solar energy, wind energy, biomass, and fresh water.

### Step 2: Analyze the Options
We have four options to consider:
1. Petroleum
2. Coal
3. Nuclear fuel
4. Trees

### Step 3: Evaluate Each Option
- **Petroleum**: This is a fossil fuel that takes millions of years to form and cannot be replenished within a human timeframe. Thus, it is not renewable.
- **Coal**: Similar to petroleum, coal is also a fossil fuel that forms over geological timescales and is not renewable.
- **Nuclear fuel**: This is derived from uranium and is not renewable as it cannot be replenished naturally.
- **Trees**: Trees can be replanted and regrown, making them a renewable resource. They can be used for biomass energy and can regenerate over time.

### Step 4: Conclusion
Based on the analysis, the only option that represents a renewable source of energy is **Trees**.

### Final Answer
The correct answer is **Trees**.

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