I want to take this question to talk about the way gmat think on sc.
gmat dose not test us the absolute rule and make us choose the perfect choice which match the absolute rules. if gmat do so, gmat look for a machine.
gmat test our ability to find the best choice, not perfect choice. gmat want us to find the best choice, using logic and meaning. in fact , we can not alway make perfect sentences. for example, we can not alway make both adjectivals touching the noun modified.
"effient" should touch "at aquiring" . But in this problem, the best choice is C and it dose not follow that rule. in other sc problem "efficient" far from "at aquiring" can be considered wrong because there are better pattern/better writing
that is the the main core of the game on sc. we should not focus on the absolute rules though we have to learn those rules. focus on meaning
the problem for us is that we , and I alway ask about the rule. one of the reasons is that we do not know the rule. of course we have to learn the rule. but the game is "learn the rule but focus on meaning" . never apply the rules mechanically.
is my thinking correct?