Final answer:
The correct step after taking a take-away order is to double-check it for accuracy and then enter it into the system to ensure correctness and minimize errors.
Step-by-step explanation:
After taking a guest's take-away order, the appropriate action to take before sending it to the kitchen is c) Double-check the order for accuracy and enter it into the system.
This ensures that the order is correct and minimizes the chances of mistakes being made. It is important to provide excellent customer service in the restaurant industry, and verifying an order is a crucial part of this process.