Which of the following facilitated film's transition from a novelty and technological curio into a significant pop-culture attraction?

A) the endorsement of the upper classes
B) tax rebates and incentives
C) emerging consumer culture
D) the advent of concession counters

The emerging consumer culture, with its increasing demand for entertainment and leisure activities, played a significant role in making film a popular attraction. As more and more people began to attend movie theaters, the industry grew in importance and influence, transitioning from a novelty into a major cultural force. While the other choices (endorsement of the upper classes, tax incentives, and concession counters) may have had some impact, it was the changing consumer attitudes and behaviors that ultimately drove the rise of film as a cultural phenomenon.