Final answer:
In 'Home Alone,' Kevin McCallister plays "Rockin' Around the Christmas Tree" to fake a holiday party and prevent burglaries.
Step-by-step explanation:
In the film Home Alone, the main character Kevin McCallister uses the song "Rockin' Around the Christmas Tree" by Brenda Lee to create the illusion of a lively holiday party and deter burglars. Kevin sets up a series of mannequins and cut-outs attached to strings, which he moves from outside to make it appear as though people are dancing to the music inside the house. This clever tactic is one of the iconic scenes in the movie that highlights Kevin's ingenuity while he defends his home.