Gerund follows the verb

Even though she didn't anticipate manager's proposal to strengthen her department.

A) to implement it, the advertising manager agreed with the personal

B) implementing it, the advertising manager agreed with the personal

C) implementing it, the advertising manager agreed with the personnel

D) to implement it, the advertising manager agreed with the personnel

E) implementing it, the advertising manager agreed to the personnel

Explanation:
(E) 'Personal' deals with a person's own special things; 'Personnel' deals with a lot of people.
Verbs like 'anticipate' must be followed by a gerund, the verb form in '-ing'. The correct idiom usage should read: a person 'agrees with' another person, not with an inanimate thing such as a proposal. Therefore, she agrees 'to the proposal.' (E) is correct.