Final answer:
In soccer, when the ball goes out of bounds on the sidelines, the game is restarted with a throw-in by the opposing team.
Step-by-step explanation:
When the ball goes out of bounds on the side lines in a soccer game, the correct action to take is a) Throw-in. This is one of the procedures for restarting play after the ball has left the field of play. The throw-in is taken from the point where the ball crossed the sideline, by a player from the opposing team to the player who last touched the ball. The player must throw the ball using both hands and deliver it from behind and over the head, while keeping both feet on the ground on or behind the sideline.