GMAT PRER PROBLEM.PLEASE HELP

[gbyhats]

Hi Dear Manhattan Instructors ;)

Is there any good strategy to solve this kind of "what is the basic assumption?" CR questions?

(Is this question too broad to explain, haha? Not need to be specific. A very very brief tip is enough for me, I will figure out the rest.)

--

if we're saying that the weather is the cause, then we're assuming that other things--including the stuff in the soil--are not the cause.

I'm often surprised that Ron can always simplify thing so well.

[RonPurewal]

well, you have the method of negation: if an assumption is false, then the argument falls apart. so, negate the answer choices (= make them false), and see which negation destroys the validity of the argument.

beyond that, it's you, your brain, and your common-sense knowledge of the real world. (if you're looking for a "formula"... that's not going to happen.)

[gbyhats]

well, you have the method of negation: if an assumption is false, then the argument falls apart. so, negate the answer choices (= make them false), and see which negation destroys the validity of the argument.

Gotcha! ;)

Thank you Ron!

[RonPurewal]

you're welcome.