What is the purpose of a catalytic converter in an automobile? a. It helps reduce the car's emissions of carbon dioxide and other harmful gases. b. It helps start the car. c. It is a part of the combustion chamber. d. It is a part of the climate control system.

To answer the question step by step:

1. Identify the function of a catalytic converter: A catalytic converter is a device used in the exhaust system of an automobile. Its primary function is to reduce the emission of harmful gases produced by the engine.

2. Understand the options provided:

   • Option a: It helps reduce the car's emissions of carbon dioxide and other harmful gases.
   • Option b: It helps start the car.
   • Option c: It is a part of the combustion chamber.
   • Option d: It is a part of the climate control system.

3. Evaluate each option:

   • Option a: This is correct because the catalytic converter's main purpose is to convert harmful gases like carbon monoxide, hydrocarbons, and nitrogen oxides into less harmful substances such as carbon dioxide and water vapor.
   • Option b: This is incorrect because the catalytic converter does not play a role in starting the car.
   • Option c: This is incorrect because the catalytic converter is not part of the combustion chamber; it is part of the exhaust system.
   • Option d: This is incorrect because the catalytic converter is not related to the climate control system.

4. Conclusion: Based on the evaluation, the correct answer is:

   a. It helps reduce the car's emissions of carbon dioxide and other harmful gases.