It's supporting details.
Thesis and main idea go in the introduction.
Answer. The final sentence:
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"<span>The salesperson handed a receipt to each customer that was very long. "
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</span>→ <span>is the sentence that contains a misplaced modifier.
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</span>→ 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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1. Sarah and I like to ride our bikes in the park
People with modern worldviews tend to emphasize rationality, science, logic, and critical thinking, and they often question imposed views from (religious) traditions and the past. To do something “because we have always done it” is not an argument for moderns.
