Which of the following constitutes a reckless challenge?

A reckless challenge is defined by an action that demonstrates a disregard for the safety of other players or the laws of the game, often characterized by the manner or intensity in which it is executed. When considering the correct answer, a tackle executed with excessive force exemplifies this definition clearly. Such a tackle suggests that the player is engaging in a manner that not only surpasses the acceptable level of physical play in the sport but also poses a potential risk of injury to the opponent. In this context, excessive force indicates a willful neglect of the player's duty to prioritize the safety of others during play.

The other options do not meet the criteria for a reckless challenge. A slight infringement that goes unpunished by the referee may indicate a less serious incident that does not threaten player safety or involve excessive force. A play that results in injury due to an accidental slip reflects an unfortunate circumstance rather than a deliberate reckless act. Lastly, a challenge made without the intention to play the ball might not inherently demonstrate reckless behavior, especially if it does not involve excessive force or negligence in terms of player safety. Thus, the nature of the challenge and the intention behind the action are key factors in determining recklessness, which is clearly illustrated in choice A.