Which manual contains expanded preflight guidance?

The correct choice is associated with the 'CODDE 2' manual, which provides comprehensive preflight guidance. This makes it essential for pilots to ensure they adhere to safety protocols and requirements before taking off. CODDE 2 includes detailed procedures, checklists, and additional data that are necessary for successful preflight preparations and decision-making.

In contrast to the other options, the 'CODDE 1' manual does not cover the same level of expanded preflight information as CODDE 2. The 'Quick Reference Handbook 1' serves as a streamlined resource that is better suited for rapid access to information during flight rather than preflight activities. The 'Aircraft Operations Manual' focuses more broadly on operational procedures and policies, but it may not provide the depth of preflight guidance that CODDE 2 does. Therefore, for preflight preparation, CODDE 2 stands out as the most comprehensive resource.