One issue that affects everyone taking the GMAT is the 50/50 split. Particularly on Critical Reasoning (but also the other sections) after a bit of preparation you should be able to quickly eliminate the three junk answers. But, how to identify the correct one from the two decent candidates? My personal suggestion is to go into a role play. There are two viable answers on the table. Now I play psychologist. The question is not which one is right, but what is this GMAT idiot going to prefer?
It’s like having a difficult boss. If you give this difficult character (boss, GMAT, etc) what s/he expects, everyone is happy. And since the GMAT prefers top-level answers, not controversial or committal, clearly connected to the subject, then this non-emotional approach can be pretty effective at getting from two to one. This method is actually a form of pattern recognition, and let’s not forget that a standardized test like GMAT is an elaborate sequence of patterns.