In order to reduce light-duty vehicle greenhouse gas emissions, a company can use either low-carbon and renewal power or make land use changes; however, neither of these strategies are by themselves sufficient to achieve success, and must be used together to reduce emissions.
(A) can use either low-carbon and renewal power or make land use changes; however, neither of these strategies are by
themselves(B) can either use low-carbon and renewal power or make land use changes; however, neither of these strategies are by
themselves(C) can use either low-carbon and renewal power or land use changes have to be made; however, neither of these strategies is by
themselves(D) can either use low-carbon and renewal power or make land use changes; however, neither of these strategies is by itself
(E) can either use low-carbon and renewal power or
it can make land use changes; however, neither of these strategies is by itself
Technique:
(1) If the underlined portion is on the longer side, the first place to look is the last underlined word (or maybe couple words). In this case, we have a 2/3 split between "themselves" and "itself." "Neither" implies "neither ONE," so we want references to "neither" to be singular. "Themselves" is plural; "itself" is singular. Eliminate A, B, and C.
(2) Between D and E, the only difference is the inclusion of "it can" in E. Do we want that? The word "either" sets up what needs to be parallel. Since the first item is the verb "use," we want the second item to also be a verb. "It can" isn't parallel with "use;" "make" is a verb, so that works. Eliminate E.
Answer choice D.