Chlorofluorocarbons are air polluting agents which are produced by

Options

A. diesel trucks
B. jet planes
C. rice fields
D. cellphones.

Explanation

**Step-by-Step Solution:**

1. **Understanding Chlorofluorocarbons (CFCs)**: Begin by recognizing that chlorofluorocarbons are chemical compounds that have been widely used in various applications, primarily as refrigerants, propellants in aerosol sprays, and in the production of foam plastics.

2. **Sources of CFCs**: Identify the main sources of CFC emissions. CFCs are released into the atmosphere through various means, including industrial processes and the use of products that contain these chemicals.

3. **Impact on the Environment**: Acknowledge that CFCs are known to have harmful effects on the environment, particularly their role in ozone layer depletion. When released, they can reach the stratosphere where they react with ozone molecules, leading to the thinning of the ozone layer.

4. **Analyzing Options**: Look at the provided options: diesel trucks, jet planes, rice fields, and cellophones. Evaluate each option to determine which is most associated with the production of CFCs.

5. **Identifying the Correct Answer**: Conclude that jet planes are significant contributors to the release of CFCs into the atmosphere. This is because they operate at high altitudes where CFCs can be released directly into the stratosphere, contributing to ozone depletion.

6. **Final Answer**: Therefore, the correct answer to the question is that chlorofluorocarbons are air polluting agents which are produced by **jet planes**.

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