Take another look at the sentence:

Eric's foot indicated his nervousness during the interview, which jiggled wildly.

Which jiggled wildly, an relative clause, is describing interview when its target should be foot. When a modifier is next to a word it doesn't logically describe, it is misplaced.

To fix the problem, you should revise the sentence like this: Eric's wildly jiggling foot indicated his nervousness during the interview.

Go to the next sentence.

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