What is a "touch" in fencing?

A "touch" in fencing refers specifically to a successful hit that is delivered to an opponent in accordance with the established rules of the sport. This concept is fundamental to fencing as it directly relates to how points are scored during a bout. A valid touch must occur in the designated target area of the opponent while adhering to the rules around the right of way, especially in disciplines such as foil and sabre. Each successful touch contributes to a fencer's score, which is essential for determining the outcome of the match.

The other options refer to different aspects of fencing. A warning relates to infractions or behaviors that violate the rules, and a defensive maneuver is a tactic employed to avoid an opponent's attack. Meanwhile, the scoring system based on speed does not accurately capture the essence of a "touch" since the act of scoring is not purely based on speed but rather on the successful execution of a hit within the regulatory framework of the sport.