Unless there are laws that say differently, I should stay within _____ of my dive flag.

The correct answer reflects safe diving practices regarding the distance a diver should maintain from a dive flag to ensure their safety and the safety of others. Staying within 15 meters (50 feet) of a dive flag allows divers to remain close enough to the flag for visibility and protection while minimizing the risk of interactions with boats or other watercraft in the area.

Dive flags serve as vital indicators of a diver's presence, helping boaters to navigate safely around divers. By adhering to this distance, divers can ensure they are visible and thus reduce the likelihood of accidents. This practice is crucial in busy waterways where visibility may be compromised, and is a common recommendation in dive training and guidelines. Staying too far from the dive flag can compromise safety both for the diver and for nearby vessels.

The other options suggest distances that may not provide adequate safety margins based on diving standards, further reinforcing why the 15 meters (50 feet) distance is emphasized in training.