Final answer:
The paragraph's central idea is that Foley artists use everyday objects to create movie sounds, like simulating tiptoes with a feather duster and thunder with aluminum.
Step-by-step explanation:
The central idea of the paragraph is that Foley artists use everyday objects to create sounds for movies. The paragraph gives examples of how they accomplish this by using a feather duster across a sheet of paper to simulate a ballerina dancing, or waving heavy aluminum to mimic the sound of thunder. These sound effects are created during the post-production phase to enhance the audio experience of a movie or theatrical production.