Passage Summary: Jimmy bought a fancy, energy-efficient water heater to save money, but his gas bill actually went up instead of down.

Reasoning: Jimmy replaced an old gas water heater with a new, highly efficient, pilotless model, yet his gas bills increased.

Analysis: This is a classic LSAT paradox where an expected outcome (lower bills from higher efficiency) is contradicted by reality. To resolve this, we need to find a factor that offset the efficiency gains. Perhaps the price of gas skyrocketed, or Jimmy started taking hour-long showers because he felt less guilty about the energy use. Since this is an 'EXCEPT' question, four choices will provide a plausible reason for the bill increase, and the correct answer will either be irrelevant or make the increase even more confusing.