Final answer:
In football, the number of loose-ball plays that can occur during a single down can vary depending on the situation and decisions made by the players.
Step-by-step explanation:
In football, there can be multiple loose-ball plays during a single down. The number of loose-ball plays can vary depending on the specific situation and the decisions made by the players. Typically, a loose-ball play occurs when the ball is fumbled or intercepted by the opposing team. This can happen multiple times during a single down, leading to turnovers and changes in possession.