I got lucky on this one. The question was a gimme for me... I specifically remember it because I've actually visited the BAY OF FUNDY in Nova Scotia.
I could immediately relate to the question because the Bay has huge tidal shifts due to it's LONG conical shape. As the Bay narrows, the amount of water being forced into the narrowing passage causes the 40ft+ tidal shift.
I really didn't pay attention to the usage or misusage of the affect/effect wording. I just looked for the answer that I knew to be true.
I suspect that many LSAT takers run across questions where personal knowledge of a subject helps narrow the choices in a question.
I guess this one helps make up for that D*MN nerve-growth RC passage!!
I think that everyone went psycho over section B, question 1. The question read as follows:
The tidal range at a particular location is the difference in height between high tide and low tide. Tidal studies have shown that one of the greatest tidal ranges in the worl is found in the Bay of Fundy and reaches more than seventeen meters. Since the only forces involved in inducing the tides are the sun's and moon's gravity, the magnitudes of tidal ranges also must be explained entirely by gravitational forces.
The answer choice that was the topic of this whole affect/effect reads as follows:
Which one of the following most accurately describes a flaw in the reasoning above?
B) It fails to consider that the size of a tidal range could be affected by the conditions in which gravitational forces act.