Correct Answer: D. LPG is cheaper than regular gasoline.Explanation:
Why D is the correct answer:This statement does not resolve the discrepancy. If LPG is cheaper than regular gasoline, it would likely encourage more people to convert their vehicles to run on LPG, rather than discourage them. Therefore, it does not explain why only a few people choose to convert their vehicles.
Reasons for Eliminating Other Options:
A. Few gas stations sell LPG.This explains a practical barrier to conversion. If there are not many gas stations that sell LPG, it would make it inconvenient for drivers to refuel their converted vehicles, thus discouraging conversion.
B. Converted cars tend to break down more often.This suggests a reliability issue with converted vehicles. If converted cars are prone to breakdowns, potential converters may be deterred from making the switch, thus explaining the low conversion rate.
C. Only cars that were manufactured after 1995 and whose motors are relatively compact can undergo such conversion.This highlights a limitation on which vehicles can be converted. If only a specific subset of vehicles can be converted, it would naturally lead to fewer conversions, thus addressing the discrepancy.
E. The maintenance of converted vehicles is more expensive.This indicates that the ongoing costs associated with maintaining a converted vehicle are higher. Higher maintenance costs would discourage people from converting their vehicles, thus explaining the low conversion rate.