Manufacturers of a new exercise machine claim that it is much more comfortable to use than older machines and hence will encourage people to exercise for longer durations; however, their users state that they do not find the new machine any different from the older ones.
Split #1 a new machine = pronoun - its , ELIMINATE A D AND E
Split #2
different than and
different fromDifferent than is unidiomatic, hence option B is correct
(A) longer durations; however, their users state that they do not find the new machine any different from
uses their to refer a new machine(B) longer durations; however, its users state that they do not find the new machine any different
from - correct its, different from(C) longer durations; however, the users of this new machine state that they do not find the new machine any different than -
different than unidiomatic(D) longer durations; nevertheless, their users state that they do not find the new machine any different from [/b]uses their to refer a new machine[/b]
(E) longer durations, however, their users state that they do not find the new machine any different than [/b]uses their to refer a new machine and different than is unidiomatic[/b]