Bike-sharing programs are becoming significant features in urban settings worldwide. These services offer a convenient and eco-friendly alternative for city dwellers to navigate crowded and busy streets. Often, people can access bicycles from docking stations around a city via smartphone apps. These apps make it easy to find and return bikes while improving urban mobility and reducing traffic congestion. Moreover, these programs can help improve air quality, reduce reliance on cars, and promote physical activity. Bike-sharing can foster community as residents embrace a cleaner, more efficient transportation system in their urban landscape.

Which factor likely contributes most to the growing popularity of bike-sharing programs in urban areas?
a. the opportunity to work out with people who have the same interests
b. the convenience of having bicycle docking stations around cities
c. the urgent need to eliminate congestion caused by traffic

b. the convenience of having bicycle docking stations around cities