Answer:
Phillip is stunned because he has not been attending to the management function of "controlling".
Step-by-step explanation:
The four management functions are; planning, organizing, leading and controlling.
Controlling involves monitoring the processes and activities involved as an organization works, according to laid down plans, towards achieving set goals and objectives.
Phillip is stunned because he has not been monitoring comparing the progress made so far with the strategic plan (i.e. he has not been controlling the strategy implementation activity).