PTF97.S3.Q07 - Automobile manufacturers who began two decades ago...

JacobBots

Not sure why AC A is the answer here. So what if two members of the household own cars? They could both own lighter vehicles. It says nothing about if they own a light vehicle and a heavy vehicle.

AC C shows that even the "heavy" vehicles are lighter and more fuel efficient than their predecessors while still being safer than light vehicles.

maco4538

Conclusion: The manufacturer avoided the dilemma created by manufacturing a more fuel efficient, lighter, less safe vehicle for highspeed highways.

How?

Premise: By offering customers two types of vehicles: a lighter fuel-efficient car for local transportation (avoiding highspeed highways) and a heavier, safer vehicle for long-distance travel on highspeed highways.

Assumption: People own both types of vehicles.

This is the assumption that the argument is operating on. The manufacturer only "avoids" the safety dilemma by offering two types of vehicles. To say that the safety hazard of the lighter vehicle is absolved by offering a heavier vehicle, we have to assume that people own both vehicles.

So, "A" strengthens this assumption by catering to the necessary assumption. If people don't have both cars, then the argument falls apart. You would need at least two cars to have both cars.

"C" would weaken the argument because if even the heavier car is still pretty light then the safety concern is still at play and the safety dilemma was not avoided.