What is indicated by the umpire's whistle after a goal has been scored?

When the umpire's whistle is blown after a goal has been scored, it serves as an important signal indicating when play is to be restarted. This whistle signifies that the goal has been successfully scored and confirms the score to all players on the court. Following this, the game resumes with a center pass from the team that conceded the goal, ensuring the flow of the game continues without interruption.

The other options do not accurately represent the function of the whistle at this time. A time-out in netball is called under different circumstances and requires specific signals; it is not indicated by the umpire's whistle alone. Additionally, while the whistle can inform players of violations during play, its role after a goal is particularly focused on restarting the game. Lastly, the conclusion of a quarter is signified through a different whistle or signal, not specifically after a goal.