Final answer:
The person will call the other store to check for shoe availability if it is not in the stock room.
Step-by-step explanation:
If the shoe is not available in the stock room, the person will call the other store to see if it is available there. This shows a commitment to customer service by taking the extra step to fulfill the customer's needs. The options provided were to call the other store, order the shoe online, check with the customer, or leave the customer empty-handed. The correct action, as stated, would be to call the other store.