Final answer:
A positive turnover margin indicates that Team A has a lower number of turnovers compared to their opponents, signifying good ball possession and defensive capabilities to take the ball from the opposing team.
Step-by-step explanation:
A positive turnover margin for Team A in the context of sports, specifically American football, means that Team A has fewer turnovers than their opponents. This is represented by option (c) Team A has fewer turnovers than their opponents. A turnover in football occurs when the team with possession of the ball (the offense) loses possession to the defensive team before they intend to, primarily through two types of events: fumbles (when a player drops the ball) or interceptions (when a pass meant for an offensive player is caught by a defensive player). A positive turnover margin is indicative of a team that is very good at maintaining possession of the ball and/or effective at taking the ball away from the opponent.