What is one way to reduce carbon dioxide emissions?

Switching to renewable energy sources is an effective way to reduce carbon dioxide emissions because renewable energy, such as solar, wind, and hydroelectric power, produces little to no carbon emissions during operation. Unlike fossil fuels, which release significant amounts of carbon dioxide when burned for electricity or transportation, renewable energy harnesses natural processes that don't contribute to greenhouse gas emissions. By transitioning to energy sources like solar panels or wind turbines, we can significantly decrease our reliance on fossil fuels, thus lowering the overall carbon footprint associated with energy production.

The other options contribute to increased carbon dioxide emissions. Air travel and increased car usage lead to more fossil fuel consumption, resulting in higher emissions. Using fossil fuels directly contradicts the goal of reducing carbon emissions since these fuels are the primary sources of greenhouse gases. Therefore, adopting renewable energy is a strategic move for environmental sustainability and climate change mitigation.