Cooking utensils are supposed to transfer the heat from the source to the food being cooked. Which of the following is not a good choice for making cooking utensils?

Options

A. Steel
B. Copper
C. Brass
D. Plastic

Explanation

To determine which material is not a good choice for making cooking utensils, we need to analyze the heat conductivity of the given options: Steel, Copper, Brass, and Plastic.

### Step-by-Step Solution:

1. **Understand the Requirement**: Cooking utensils need to be good conductors of heat to transfer heat efficiently from the source to the food. This ensures that food cooks quickly and energy is not wasted.

2. **Evaluate Each Material**:
- **Steel**: Steel is a decent conductor of heat, but it is not the best compared to other metals. It is commonly used for cooking utensils.
- **Copper**: Copper is an excellent conductor of heat. It heats up quickly and distributes heat evenly, making it a preferred choice for high-quality cooking utensils.
- **Brass**: Brass, which is an alloy of copper and zinc, also conducts heat well, although not as efficiently as pure copper.
- **Plastic**: Plastic is a poor conductor of heat. It does not transfer heat effectively, which means food would take longer to cook if plastic were used as a cooking utensil.

3. **Identify the Poor Conductor**: Among the materials listed, Plastic stands out as the only poor conductor of heat. Therefore, it is not suitable for making cooking utensils.

4. **Conclusion**: The material that is not a good choice for making cooking utensils is **Plastic**.

### Final Answer:
Plastic is not a good choice for making cooking utensils.

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