What call does the umpire make when the first ball is caught in the goal third?

When the first ball is caught in the goal third after being thrown from the attacking team's side, the umpire makes the call of "Over a third." This is because, according to netball rules, a player is not allowed to throw the ball into the goal third from outside it, as this could lead to potential unfair advantages in the scoring process.

The term "Over a third" specifically refers to the violation that occurs when the ball is released inappropriately across the third line. Consequently, this call helps maintain the structure and fairness in the game's flow, ensuring that attacks begin from the correct zones on the court.

Other options relate to different scenarios or elements of play. For instance, "Out of bounds" would refer to a situation where the ball has gone beyond the court's boundary, which is not applicable in this instance. "Goal scored" indicates a successful attempt to score points, while "Possession change" refers to when one team loses the ball to the other due to a foul or turnover, neither of which fit the situation of a ball caught in the goal third.