adkikani
Hi Experts
GMATNinja GMATNinjaTwo sayantanc2kCan any one please help between B/ E?
Remaining choices are eliminated since
such as is used for showing
examples.
WR,Arpit
Hello Arpit,
adkikani,
I will be glad to help you with this one.

B. whether from natural processes such as shoreline recession, rising sea levels, and destructive hurricanes, or also
Choice B is incorrect for a couple of reasons.
1. Use of
whether is incorrect in the context of this sentence because whether is used to present choices or alternatives. But there is no question of any alternative in this sentence as the sentence intends to say that the ecosystems of barrier islands are extremely vulnerable to either natural processes or the ever-increasing pressures of development - one of the two reasons.
Also, the expression whether from is idiomatic. The correct expression is
vulnerable or
vulnerable to.
2. Use of
also with
or is incorrect. There is no question of also in the statement either this or that because in any given situation, only one factor will be applicable.
E. to natural processes such as shoreline recession, rising sea levels, and destructive hurricanes,
as well as to
Choice E is the correct answer because it uses the correct expression vulnerable to and maintains perfect parallelism. Pay attention to the specific use of
to at the end of the choice. Present of this preposition leaves no ambiguity that what entities are meant to be parallel.
Hope this helps.

Thanks.
Shraddha