Because of limited available funds, some non-profit companies
had elected to train their current employees in management techniques rather than recruiting knowledgeable managers from outside sources.
past perfect is incorrect here as we do not have two past tense actions here.
hence A, B are eliminated.
(A)
had elected to train their current employees in management techniques rather than recruiting(B)
had elected training current employees in management techniques rather than recruitingComing to options C, D and EThe issue being tested here is parallelism w.r.t IDIOM X rather than Y vs Instead of.
Refer this link below regarding IDIOM usage.
https://magoosh.com/gmat/2013/gmat-idioms-of-comparison/(C) have elected
training current employees in management techniques
instead of recruitingsince instead of requires noun we cannot use verb recruiting after the idiom.
Also training can be a noun implying to refer current employees who are training.
Thus parallelism is flawed here.(D) have elected to
train current employees in management techniques rather than
recruitingverb train is not parallel to recruiting(verb+ing form) thereby parallelism is flawed here.(E) have elected to train current employees in management techniques rather than recruit
train is perfectly parallel to recruit here.
Even though it may appear that verb misses preposition to, it is not so.