when may a runner tag up on a fly ball? when the ball leaves the infield when the fly ball leaves the…

when may a runner tag up on a fly ball? when the ball leaves the infield when the fly ball leaves the playing field as soon as the ball is hit when the ball is caught
Answer
Brief Explanations:
In baseball, a runner can tag up and attempt to advance when a fly - ball is caught by a fielder. This is to prevent the runner from leaving the base too early and being called out for leaving before the ball is caught.
Answer:
When the ball is caught