SAT Text Structure and Purpose Question

Harold Newton's Yellow Day, a wetland landscape with palm trees and lush greenery set against the pastel yellows and pinks of the sky and water, is typical of paintings by the Florida Highwaymen, loosely affiliated landscape artists mainly active in Fort Pierce, Florida, during the 1950s and '60s. Some art historians suggest that Highwaymen paintings played a role in shaping popular perceptions of the state that persist today: the natural iconography that Newton and colleagues constantly revisited—lush tropical forests, vivid sunsets—is now seen as classically Floridian. Which choice best states the main purpose of the text?