Final answer:
In MLA style, the title of a film in a works-cited entry, such as 'Moonstruck', should be italicized while other elements like the director's name, production company, release year, streaming service, and URL should not be.
Step-by-step explanation:
In Modern Language Association (MLA) style, the titles of long works like films should be italicized. According to the reference information provided, when citing a film, you would begin with the title, followed by the director, the production studio, and the year released. Additional elements such as other contributors, the streaming service, and URL should be included but not italicized. Therefore, in the works-cited entry for the film provided, the correct elements to italicize would be the title of the film 'Moonstruck'. Other details such as the director, production company, year, streaming service, and URL should not be italicized.