The correct response is:
It helps them know that the word has to do with an artistic display that involves fire.
The term "pyrotechnics" derives from the Greek roots "pyro," meaning fire, and "technics," meaning skill or art. Therefore, understanding that "pyre" relates to fire aids in recognizing that "pyrotechnics" involves the craft or art related to fire, particularly in the context of fireworks and other controlled fire displays.