What is the LRBL for the CRJ 700?

The LRBL for the CRJ 700 refers to the Load and Resource Balance Limit, which is a critical measure for ensuring that the aircraft is operated within safe weight and balance parameters. The choice "GSD" stands for Ground Service Document, which is often used in the context of airline operations for managing ground services, including weights and balances.

In this case, "GSD" being the correct answer indicates that it serves as the key reference point for the necessary load calculations and balances specific to the CRJ 700. Understanding the GSD is essential for pilots and ground crew as it helps to ensure that the aircraft is loaded appropriately for safe operation, directly impacting performance, safety, and compliance with aviation regulations. The other options do not specifically refer to the Load and Resource Balance Limit in the context of the CRJ 700, which makes "GSD" the best choice for this question.