Question

PLEASE HELP!

Answer 1

Answer.  The final sentence:
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"The salesperson handed a receipt to each customer that was very long. ​"
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   →  is the sentence that contains a misplaced modifier.
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    → Specifically, the placement of the phrase: "that was very long".
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This is a misplaced modifier, because it is difficult to determine if "very long" modifies either: 1)  the actual "receipt" ; or, 2) the "customer(s)" —specifically, "each customer [that happened to be 'very long"].
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Answer 2

Answer:

the answer is actually "They spotted many shops heading up the escalator"

Explanation: I just took the test