Question

on automobiles, what is designed to reduce noise pollution? oil pistons mufflers carburetors

Explanation:

• Oil is for lubrication, not noise reduction.
• Pistons are part of the engine's combustion process, not for noise.
• Mufflers are designed to dampen engine exhaust noise, reducing noise pollution.
• Carburetors mix fuel and air, not related to noise reduction.

Answer:

C. mufflers