Which type of commute has the least impact on the environment?
A. A long ride on a train that travels between two distant cities
B. A long drive in an automobile along an interstate highway
C. A short walk or bike ride along a well-maintained sidewalk
D. A short ride on a bus that very few people tend to use
C. A short walk or bike ride along a well-maintained sidewalk
Walking or biking releases zero emissions and is the most environmentally friendly mode of transportation compared to driving a car, riding a bus, or taking a train.