What command should be given to bring Sailors back to attention from a relaxed position?

The command that should be given to bring Sailors back to attention from a relaxed position is "Attention." This command is fundamental in military training and is used to order service members to assume the position of attention, which involves standing straight with feet together, arms at the sides, and eyes forward.

Using this command is essential for establishing discipline and readiness among personnel. It signifies that personnel should be prepared for further commands or actions and demonstrates adherence to military protocols. The command "Attention" is widely recognized and standardized within military environments, ensuring clear communication and a consistent response from all service members.

The other options do not convey the same level of formality or uniformity required in a military setting. While commands like "Stand Tall," "Return to Position," and "Stand Up" may imply a need to change posture, they lack the specific and recognized directive that the command "Attention" provides.