Which of the following practices can help reduce vehicle emissions?

Regular engine checks and maintenance are crucial for reducing vehicle emissions because they ensure that the vehicle's systems are functioning optimally. A well-maintained engine operates more efficiently, which means it burns fuel more completely and produces fewer harmful emissions. Regular maintenance includes tasks such as changing the oil, replacing air filters, and checking the fuel and exhaust systems, all of which contribute to better fuel economy and lower emissions. When an engine is out of tune or components are worn, it can lead to incomplete combustion, resulting in increased pollutants being released into the atmosphere. Thus, maintaining the vehicle according to the manufacturer's recommendations directly supports efforts to minimize environmental impact.