What is the primary purpose of a safety fuse?

The primary purpose of a safety fuse is to function as a flexible cord that contains an internal burning medium, allowing it to ignite the fireworks safely at an appropriate time. The safety fuse is designed to provide a delay between the moment it is lit and when it actually ignites the firework, creating a safe distance for the operator and spectators. This controlled ignition timing is crucial for ensuring safety during a fireworks display, as it minimizes the risks associated with accidental ignition or premature explosions.

In the context of fireworks safety, the fuse's role cannot be overstated, as it directly impacts the effectiveness of the display while maintaining safety protocols. The other choices, while related to the broader topic of fireworks safety and operation, do not accurately describe the specific function of a safety fuse.