Final answer:
Confirming a Drive Thru order is correct and complete is typically done by checking the number of items against the Bag Tag or receipt before handing it out to the customer.
Step-by-step explanation:
To confirm an order is complete and correct before handing it out at the Drive Thru, the best practice is option C) Check the number of items with the Bag Tag or receipt before handing it out. This method ensures that all the items that the customer has ordered are accounted for and are in the bag. It's both efficient and effective, compared to opening each box which would be time-consuming and could breach food safety protocols, and it is part of the standard procedure in many fast-food chains to ensure customer satisfaction. It's important to cross-reference every item on the bag tag or receipt to make sure nothing has been missed and that the order is accurate. A quick visual check of items without unwrapping them can be done if necessary to confirm item types.