How is the process of train coupling performed?

Answer: B — By aligning couplers, locking them, and checking for secure attachment

The process of train coupling is crucial for ensuring that the cars are securely connected for safe transport. The correct approach involves aligning the couplers of the train cars, locking them into place, and then performing a thorough inspection to check for a secure attachment. Proper alignment of the couplers is essential, as it ensures that the connecting mechanisms engage properly. After the couplers are locked, checking for secure attachment is a critical step. This inspection confirms that there is no risk of disconnection while the train is in motion, preventing potential accidents or cargo loss. Ensuring safety through this additional step is why this method is the standard practice in train operations, reinforcing reliability and operational integrity in rail transport. This thorough process helps to maintain high safety standards in rail operations, which is vital for the protection of both crew members and cargo. The other options fail to include this important inspection step, which could compromise safety.