Answer:
hold weekly employee meetings
Step-by-step explanation:
Rachael's Bakery is trying to increase profit margins and a good way to do this will be by reducing cost that the business incurs.
The other options given result in reduced cost. That is selling plainly frosted cake, only selling chocolate chip cookies, and stopping delivery services.
However holding weekly employee meetings will result in increased cost. There will be increased cost of transporting employees to the meeting each week, and also logistics cost like accommodation.