PrepTest 150

Incorrect. The stimulus states that the cab can run the A/C and maintain speed, so this answer choice doesn't apply.

Correct. Argument or Facts:
Argument

Valid or Flawed:
Flawed

Question Type:
Strengthen (Principle)

Stimulus Summary:
A taxi driver turned off his A/C. It improved fuel economy but made his passengers complain. He made the right call.

Answer Anticipation:
The correct answer choice here must justify turning the A/C off. It can either do that by prioritizing fuel economy over passenger comfort, or by directly stating that turning the A/C off in this situation was justified.

Answer Explanation:
This answer choice directly justifies turning the A/C off. If fuel economy would dip, then the cabbie shouldn't run the A/C, according to this rule (well, its contrapositive).

Key Takeaway:
If you're getting turned around in conditional answer choices, diagram them out! Trying to solve this question in your head can be much slower than putting pencil to paper and working through it.

Incorrect. In the stimulus, the cabbie picked fuel economy over passenger comfort, so this answer choice about balancing the two doesn't apply.

Incorrect. The cabbie here chose the option that resulted in passenger complaints, so this answer choice is the opposite of what we're looking for.

Incorrect. This answer's contrapositive states that passengers complaining is sufficient to leaving the A/C on, so this answer is the opposite of what we're looking for.