When recommending a Marriott hotel to a client, which chain code should be used to obtain room availability information across various Marriott brands using the GDS?

The correct option is used to identify Marriott hotels within the Global Distribution System (GDS) for efficient retrieval of room availability and other reservation-related information across multiple Marriott brands. Recognizing the specific chain code allows travel agents and clients to seamlessly search for accommodations within the extensive portfolio of Marriott properties.

The chain code serves as a distinct identifier that enhances the booking process by ensuring that the GDS accurately pulls data pertaining to all relevant Marriott brands, which may include full-service hotels, resorts, and select-service properties. Utilizing the appropriate chain code streamlines the booking process and supports agents in offering the best options to their clients.

Other codes represent different hotel groups or brands not affiliated with Marriott, which would not provide the required access to room availability across Marriott's diverse offerings. Therefore, employing the correct chain code is pivotal for anyone needing to find and book rooms at Marriott hotels efficiently.