Answer:
D) too little employee participation
Step-by-step explanation:
Since in the question, it is mentioned that the for best customer service what actions to be taken by the employees so that the quality could become better
There is a survey done i.e. depend upon the feedback
Now to overcome this, the option D is appropriate as it contains that there is too less employee participation that became the barriers for success the control system and if the employee participated is there so automatically the company could give the better customer service as compared to before