Question

what is the most effective long - term solution to reduce the amount of carbon dioxide emissions?
drive less
find alternatives to fossil fuels
increase gas mileage on cars
recycle the gas

Explanation:

Fossil - fuel combustion is a major source of carbon - dioxide emissions. Finding alternatives to fossil fuels can significantly and sustainably reduce long - term emissions. Driving less and increasing gas mileage are short - to medium - term measures. Recycling gas is not a common or effective way to reduce CO2 emissions.

Answer:

Find alternatives to fossil fuels