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E)...if x then y is equal to if not y then not x...means...if i dont drive my car on the highway then it is not raining. this condition is sufficient for the statement:"my car is not polluting" b/c i dont travel on the highway and therefore my car is not polluting...
If your mind can conceive it and your heart can believe it, have faith that you can achieve it.
I think E. If is not raining, then you are not in Highway. And if you and your car are not in the Highway, then your car is not polluting. Try to write the implications so that you can understand easily.
A is out coz bicycles are not related here.
B is out coz it obviously conflicts with the conclusion.
C is out coz it breaks the logical link between "my car" and "rain"
D is out coz it's unrelated.
E : " it's not raining" ---> i'm not driving my car on highway----> my car can avoid being a polluter ....uhm, but i think the logic is not sufficient ...It should be better if A is " All polluters travel on highway" .