Answer:
A. They started showing transportation and tourists as subjects in their paintings.
Step-by-step explanation:
Painting has always been an important medium that reflects reality and society. This role was even more significant in the past, when media such as photograph and video were not available. An example of the way painting is linked to social changes is the case of artists like John Sloan. In his painting Passing Through Gloucester, he shows how society adapted to the changes in transportation that had taken place in recent years. One of the ways in which he does this is by showing transportation and tourists as subjects in his paintings.