Final answer:
A reverse flow valve is true to stop a flashback flame from traveling through hoses, preventing potential accidents and ensuring user safety.
Step-by-step explanation:
The statement that a reverse flow valve will stop the flame from a flashback from continuing through the hoses is True. A reverse flow valve, also known as a check valve, is designed to allow gas to flow in only one direction. Its purpose is to prevent the reverse flow of gases, which can create a dangerous situation by sending a flame back up into the gas supply where it could cause an explosion or a wider-scale fire. When a flashback occurs, if the valves are working properly, they will close automatically and stop the flame from traveling back through the hoses, thereby preventing potential accidents and ensuring the safety of the user.