Final answer:
True. A state association may establish guidelines to use a running game clock when a point differential is reached.
Step-by-step explanation:
The statement is true. A state association may establish guidelines to use a running game clock when a point differential is reached. This is commonly done in sports to speed up the game and prevent further scoring when one team has a significant lead. For example, in basketball, if a team is ahead by a certain number of points in the final minutes of the game, the clock may run continuously instead of stopping after every basket.