Take another look at the sentence:

Laura and Diane bang on Boen's door when they need heavy furniture moved, after they have clogged the garbage disposal, and __________.

The blank requires a subordinate clause. You chose having discovered a spider in the bathtub, which is a gerund phrase and thus causes a parallelism error.

Before you continue, review the rules for parallel structure.

Go back to the sentence to try again.

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