When the CEO summoned a group of senior marketing managers to study competitor's practices, the managers found that the difficulties were more serious than
they imagined it to be and the competitor had made huge investments in a survey to gather, integrate, and to analyze data from each store and every sales unit and had run a multitude of experiments.
The question is alll about PARALLELISM in gather, integrate and analyze and about the tense issue on three things : The managers found; the managers imagined; and competitors had done. So, the two later activities 'the managers imagined' and 'competitors had done' have happened prior to "the managers found' and therefore, should be in past perfect tense that is the verb should contain HAD.A.) they imagined it to be and the competitor had made huge investments in a survey to gather, integrate, and to analyze data from each store and every sales unit
Imagined requires HAD; to gather, integrate, and to analyze data NOT parallel; imagined IT to be is wrongB.) they imagined and that the competitor had made huge investments in a survey to gather, integrate, and analyze data from each store and every sales unit
Imagined requires HAD; C.) they had imagined and the competitor made huge investments in a survey to gather, integrate, and analyze data from each store and every sales unit
'the competitor made' requires HAD; D.) they imagined and that the competitor made huge investments in a survey to gather, integrate, and to analyze data from each store and every sales unit
Imagined requires HAD; 'the competitor made' requires HAD; to gather, integrate, and to analyze data NOT parallel; E.) they had imagined and that the competitor had made huge investments in a survey to gather, integrate, and analyze data from each store and every sales unit
CorrectE