Answer:
The correct answer is symbolic interactionism.
Explanation:
Symbolic interactionism explains how individuals interact and develop associations through symbols. Individuals put more focus on subjective meanings such as events, objects, symbols, etc. In the given scenario, Gayle made an interaction through a yellow smiley face which she associated with lower price points. The theory was compiled from the teachings of George Herbert Mead in the early years of the 20th century.