Poor conductors are:

Options

A. Plastics
B. Clothes
C. Wood
D. All of these

Answer

### Step-by-Step Solution:

1. **Understanding Conductors and Insulators**:
- Conductors are materials that allow electric current to flow through them easily. Examples include metals like copper and aluminum.
- Insulators, on the other hand, are materials that do not allow electric current to pass through them.

2. **Identifying Poor Conductors**:
- Poor conductors are materials that resist the flow of electric current. They are often referred to as insulators.
- In this case, we are looking at plastics, clothes, and wood.

3. **Analyzing Each Material**:
- **Plastics**: These are widely known as insulators. They do not conduct electricity and are used to cover electrical wires to prevent accidental shocks.
- **Clothes**: Generally made from fibers like cotton or polyester, clothes also do not conduct electricity well, making them poor conductors.
- **Wood**: While wood can conduct some electricity under certain conditions (like when it is wet), it is primarily considered a poor conductor.

4. **Conclusion**:
- All the materials mentioned (plastics, clothes, and wood) are poor conductors of electricity. They do not allow electric current to pass through them effectively.

### Final Answer:
Poor conductors include plastics, clothes, and wood.

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