Answer:
Employees frequently complain about the inconsistent assistance they receive from the HR department due to its large size.
Explanation:
Having a specialized, embedded HR unit is beneficial to each, specific unit, as HR would cater to every department and its special needs. On the contrary, centralized HR tends to give inconsistent help, as they always assign a different person or team when a problem arises.
So, if the employees complained that they cannot receive adequate help from the centralized HR, it would be wise to do what Roberta suggested.