GMAT Critical Reasoning (CR) | Re: Studies have shown that an automobile that runs on a blend

Conclusion :- increase in tax incentives for ethanol production would lessen our dependence on foreign oil.
Weaken :- increase in tax incentives for ethanol production would not lessen our dependence on foreign oil.

(A) CORRECT. If it takes 1.5 gallons of oil to make 1 gallon of ethanol, it is not
clear that producing ethanol can help us to reduce our reliance on foreign oil.
(B) As long as many drivers prefer not to switch to electric cars, it is possible that
the ethanol fuel mix will come
...

---