The correct answer is A. Add a suggestion for how to improve the issue.
Step-by-step explanation
Constructive criticism is a way of giving a judgment of something to improve it, this means that the constructive criticism, in addition to pointing out the negative aspects of a situation, focuses on proposing a solution to the difficulty. For example, constructive criticism of a student may be that despite delivering his work with excellent images and content he delivers them late, it would be advisable to continue doing the same, but deliver them in the established time to improve their grades. Therefore, in the statement, the boss could improve his criticism of his employee, advising him how he can improve his negative aspects. So, the correct answer is A. Add suggestion for how to improve the issue.