Which of the following is an advantage of bicycle transportation?

Bicycle transportation offers several advantages, one of which is the reduction of traffic congestion. When more individuals choose to ride bicycles instead of driving cars, the number of vehicles on the road decreases. This alleviates congestion in urban areas, making it easier for all forms of transportation to navigate the streets. Consequently, less time is spent in traffic, leading to improved efficiency for those who still rely on motor vehicles, as well as enhanced overall road safety. Additionally, less congestion contributes to lower stress levels for commuters and can improve air quality in cities, as fewer cars on the road typically result in reduced emissions.

The other options suggest negative impacts associated with transportation methods that are not relevant to bicycle use. Increased greenhouse gas emissions and increased reliance on fossil fuels are concerns typically linked to motorized forms of transportation, and decreased physical health benefits contradict the well-documented advantages of cycling for promoting physical fitness and well-being.