Which film's retail marketing strategy permanently changed Hollywood's summer release calendar and established the concept of the 'summer blockbuster'?

In the film industry, opening weekend box office sales can make or break a movie's financial success. Studios carefully plan release dates around major retail events to maximize audience turnout and revenue. This poll tests your knowledge about a surprising retail marketing strategy that changed how Hollywood approaches movie releases and fundamentally altered the summer blockbuster season.

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Jaws (1975)
Star Wars (1977)
E.T. the Extra-Terrestrial (1982)
Jurassic Park (1993)