Final answer:
The sentence in the passage that is not in logical order is Phrase 3, which disrupts the logical sequence of reasons for preferring compact cars by jumping to a concluding remark before presenting all additional reasons.
Step-by-step explanation:
The student is tasked with identifying the first sentence that is not in logical order within a passage discussing the reasons many Americans prefer compact cars over full-sized cars. Phrase 3 is identified as the sentence that disrupts the logical sequence.
The passage starts with a general statement about the change in buying habits (Phrase 1), proceeds to discuss the improvement in designs of compact cars as a reason (Phrase 2), but then suddenly jumps to a concluding statement with Phrase 3. In a well-constructed argument, phrases providing additional reasons or evidence should follow before a final conclusion. Thus, the phrase that mentions fuel efficiency as a reason for the preference (Phrase 3) would logically precede the mention of the additional reason of lower costs (Phrase 4). Therefore, it is the first sentence that is not in order, disrupting the logical flow of reasons presented.