Which of the following is the purpose of a black match?

The purpose of a black match is primarily to ignite pyrotechnic devices. Black match is a type of safety fuse that is designed to transmit a flame from an igniting source to the pyrotechnic composition of a device, ensuring reliable ignition. This is crucial in the operation of fireworks and special effects, as it allows for precise timing and control when igniting different elements during a performance.

While other options mentioned in the question relate to different aspects of safety and visual appeal in fireworks displays, they do not pertain directly to the primary function of a black match. For instance, while creating visual effects is important in pyrotechnics, it is not the role of the black match. Similarly, safety in handling and measuring safety distances are critical considerations in pyrotechnics, but they are not the specific function of a black match. The correct answer emphasizes the black match’s role in ensuring effective ignition, which is fundamental to the operation of fireworks and special effects.