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Computerization and modern methods of managing voter registration have improved the
integrity of election results while at the same time they have placed unprecedented trust in
a few private corporations, having been ignored by the mainstream press since their nearly
silent rise to power more than a decade ago.
(A) while at the same time they have placed unprecedented trust in a few private corporations, having
(B) while at the same time placing unprecedented trust in a few private corporations that have
(C) while they have placed unprecedented trust in a few private corporations at the same time, and have
(D) but placing unprecedented trust in a few private corporations at the same time that have
(E) but at the same time place unprecedented trust in a few private corporations, having
The use of
but seems that the methods created an intentional effect which is not the case. Hence,
while is correct
(A) while at the same time
they have placed unprecedented trust in a few private corporations,
havingthey introduces a pronoun error. It should be these methods. Also trust in a few private corporations, having been.. is not correct. So A is out(B) while at the same time placing unprecedented trust in a few private corporations that have
Bingo!. This one corrects the pronoun error and conveys the intented meaning clearly and concisely. Hence B is correct(C) while
they have placed unprecedented trust in a few private corporations at the same time
, and haveHere the pronoun error persists. The introduction of and have distorts the meaning, implying that the methods are ignored. So C is outPls give kudos