What does remove pollution from the air? ) cars mountains rain sunlight

The question is asking which of the given options can help remove pollution from the air. Among the options, rain is the most effective in removing pollution from the air. This is because rainwater can wash away dust and other particles from the air, thus cleaning the air. The other options, cars, mountains, and sunlight, do not have the same effect. Cars contribute to air pollution, mountains do not have a significant impact on air quality, and sunlight does not remove pollution from the air.