As its sales of computer products have surpassed those of measuring instruments, the company has become increasingly willing to compete for the mass market sales they would in the past have conceded
would in the past have conceded to rivals
would have conceded previously to their rivals
(C) that in the past
would have been conceded previously
(D) it previously
would have conceded to rivals in the past (E) it would in the past have conceded to rivals ANSWER
Notice how in the first part of the sentence the possessive pronouns 'its' refers to company. Therefore you can safely infer that company is singular and should take 'it' as a pronoun (which for collective nouns is usually the case: they are considered singular).
Notice in (D), previously...in the past... The two are the exact same thing. Therefore we have a case of redundancy.
Hope that helps
Magoosh Test Prep