Answer:
Neglecting to gather information on whether or not the plan was successful.
Step-by-step explanation:
In this step, he is most likely to face the problem of Neglecting to gather information on whether or not the plan was successful. The whole goal of the evaluation and feedback step is to analyze the results that occurred due to the decision that was made and determine whether or not it was successful, and this is done by receiving feedback from those that the decision affects. The biggest problem seen in this step is when the individual fails to gather enough information to determine effectively whether or not the decision was a good decision based on whether or not it accomplished what it was meant to accomplish.