What must be verified regarding galley carts before a flight?

Before a flight, it is essential to verify the security and brakes of galley carts. Ensuring that the carts are securely locked prevents any accidental movement during taxi, take-off, or turbulence, which could pose a safety risk to both crew and passengers. Additionally, confirming that the brakes are functioning properly ensures that the carts remain stationary when necessary, avoiding any potential hazards in the cabin.

While other aspects such as weight distribution, capacity, and placement might be relevant in general operations, the immediate concern prior to a flight primarily focuses on security and the functionality of the brakes to maintain a safe environment on board. This verification is a critical part of pre-flight checks to help ensure a smooth and secure operation.