Tricks, traps and many other bad things are going on here

1) Each of the sales people - requires singular verb as the subject is "Each"
2) Each of the sales people that - requires plural verb, because "that" changes everything and now the subject is people
Eliminate instantly every option that uses singular verb that follows "that" (B and D)
A. Each of the salespeople that were retained after the company was acquired is more likely to receive a promotion than any of the other sales team members are.I like this one.
1) "that were" correctly agrees with singular people
2) "is" summoned confusion on me but I think it's quite correct, If we extract "That" modification, we are left with "Each of the salespeople is more likely to receive a promotion..." seems corrects to me
3) "sales team members are" S+V correct agreement
4) "any
of the other sales" I cant bet on this, but I have to mention that underlined "of the" is required
C. Each of the salespeople that were retained after the company
had been acquired are more likely to receive a promotion than any of the other sales team members are.
1) "had been acquired" past perfect is not required as we use "after", which clearly indicates the time sequence, it's not incorrect but we can use past simple
2) "are" is incorrect, without "that" modifier we still have Each as a subject which requires singular verb
E. Each of the salespeople that were retained after the company was acquired
are more likely to receive a promotion than
any other sales team
member are.
1) "Are" is incorrect, as in option C
2) Imo Instead of "any other" we need "any of the other"
3) "member are" this is definitely incorrect
IMO
Ans:
A