ConnectTheDots wrote:
Of whatever reasons, I would not agree that we can prove A to be incorrect by putting numbers.
I eliminated A because it is too negative. The word "dramatically" means unexpected or sudden change. It is not practical to say "The cost of oil has fallen dramatically in the last decade". A decade is a longer period of time to say dramatic increase or decrease.
Threshold = Cost of Solar - Cost Of Oil (Assume Profit is same in both the cases)
T = S - O
Now since my T is constant, S and O should either increase or decrease together to same extent.
As per the premise, S has become "far more cost-efficient in the last decade", it doesn't use any strong word like "dramatically" , "extraordinarily" , "unexpectedly" etc, So O should keep pace with S.
In such case, C sounds a better option, as the reason for cost-efficiency is common.
A could be correct, had it been simply "The cost of oil has fallen"
I eliminated A because it is too negative. The word "dramatically" means unexpected or sudden change. It is not practical to say "The cost of oil has fallen dramatically in the last decade". A decade is a longer period of time to say dramatic increase or decrease.
Threshold = Cost of Solar - Cost Of Oil (Assume Profit is same in both the cases)
T = S - O
Now since my T is constant, S and O should either increase or decrease together to same extent.
As per the premise, S has become "far more cost-efficient in the last decade", it doesn't use any strong word like "dramatically" , "extraordinarily" , "unexpectedly" etc, So O should keep pace with S.
In such case, C sounds a better option, as the reason for cost-efficiency is common.
A could be correct, had it been simply "The cost of oil has fallen"
Actually, ignoring an option because it is too 'extreme' is not the right approach. An option, even with 'never', 'all' etc could be true. It's all about the context. Usually, the contexts used in CR questions are real life and there are few absolutes in life hence, you might have heard that extreme answers are not correct. It is just a rule of thumb and may not always hold.
As for this option being extreme due to the presence of 'dramatic', I don't see how that word is a problem. If we are talking about multiple decades, oil price falling dramatically over the last decade could make sense. Say, if it is $100 a barrel for many decades and then falls to $50 a barrel over the last decade.
(A) is incorrect because the actual cost of oil is immaterial.