arhumsid wrote:
None seems to be correct! If at all anything made sense to me it was option C (but that too is very weak).
And D, the given OA, I thought was out of scope. Where in the argument is it told that the cars being tested are
"still on the road"??
I dunno whether im confused or this question is
Experts??
Lets go through the answer choices :
A : The quality of materials used in older model cars is not superior to those used to make other types of vehicles produced in the same time period.
No comparison
between the older and newer models, so out of context.
B : Cars built before 1980 are not used for shorter trips than cars built since then.
Short trips or long trips? This really is not out concern, and even if we consider that the
older cars are used on longer trips then there are more chances of having rust,wear and tear etc, as it is being run on longer routes. Thus it cannot be considered as an Assumption.
C: Manufacturing techniques used in modern automobile plants are not superior to those used in plants before 1980.
We are concerned about the
material being used,talking about Manufacturing techniques is out of Scope.E : Owners of older model vehicles take particularly good care of those vehicles
Same as C,
we are again concerned about the material being used as the main comparison point
and not about the way owners are maintaining their cars.D : Well maintained and seldom used older model vehicles are not the only ones still on the road.
The best answer choice.
Now as the Editor says :
For instance, all the 1960’s and 1970’s cars that I routinely inspect are in surprisingly good condition: they run well, all components work perfectly, and they have very little rust,Lets take an example : There are 100 Older cars, but only 10 are being used and they are the well maintained ones, and the rest 90 are not taken out.
Whereas the new cars, lets again say there are 100 such cars, all 100 are on road, but only say 80 of them are well maintained, thus whenever the editor inspects the vehicle there is a probability of 0.2 that he may encounter not so well maintained cars, whereas while inspecting the older cars, the probability will be 0 of finding such cars, as they are never being taken out on road.
Thus D fixes this by stating : Well maintained and seldom used older model vehicles
are not the only ones still on the road..
All the older make cars are on the road, and thus a fair comparison is being done.
Without
D, it could not have been properly concluded and thus this argument depends on the assumption that is put in answer choice D.