Answer :
From the perspective of an employee, the effective channeling of work-related information and concerns A. should be conveyed directly to the manager in charge of function involved
You can guess the answer working on the options. The effective work in work-related information means direct work. D is not correct. It can be easily seen that if the concern cannot be solved by your colleagues when it is questionable and not probable. The choice B is also not correct. Letters and phone calls take time. If the work has to be monitored to the manager when the manager's function involved, the choice C is not correct. In this case, the work is going to be indirect. However, in option A the work can be viewed as effective since you report your work to the manager who knows what to deal with.