Which of the following statements IS NOT true regarding the procedure of taking a corner kick?

The statement indicating that the corner taker must be the only player within the corner arc is not true. In fact, while the player taking the corner kick must ensure that the ball is placed inside the corner arc, other players from either team can be present outside the arc during the kick. The essential requirement is that the player taking the kick must position the ball correctly within the arc and that the ball must remain stationary before it's kicked.

Understanding that multiple players can occupy the area outside the corner arc helps clarify the importance of positioning and readiness during a corner kick, fostering a dynamic environment during the match. The other statements affirm essential rules: that the ball is in play once kicked and leaves the corner arc, it must be stationary before the kick, and the actual kick must originate from within the corner arc itself.