The reason that does not make a case for the value of proposed solution is that "it is effective in solving the problems." As always, the simplest explanation is the usually the best solution. This reasoning is lined with principle of plurality and the principle of parsimony.
i think its d it should be d to match the other one
I think the answer would be c
Minimal eye contact would not help establish a strong ethos, as it gives the impression you are not confident in what you are talking about.
"Of" is a preposition in the phrase "Of studying" and "until" is another, as well as "to" in the phrase "to college" so there are 3 in that sentence.
