Final answer:
The service essential that describes ensuring the client's comfort during the service is Consult.
Step-by-step explanation:
The service essential that describes ensuring the client's comfort during the service is Consult. When a business provides a service to a client, it is important to consult with the client to understand their preferences and any specific needs they may have. By actively listening and seeking feedback from the client, businesses can tailor the service to ensure the client's comfort throughout the entire process.