When B-1 catches a throw-in with one foot in-bounds and one foot out-of-bounds, is the official correct to award the ball back to Team A?

In the scenario where B-1 catches a throw-in with one foot in-bounds and one foot out-of-bounds, the official is correct to call the ball dead and award it back to Team A. This is because a player must have both feet in-bounds when gaining possession of the ball for it to be considered a valid catch. If any part of the player is out-of-bounds at the time they secure possession, the play is considered a violation, and consequently, the ball becomes dead.

This rule is in place to ensure that players establish proper in-bounds status before they can participate in the play. The fact that one foot is out-of-bounds means that the player is not considered legally on the court when making the catch. The play stops, and Team A is awarded the ball, needing to take another throw-in to resume the game.

The other options do not accurately reflect the rules governing in-bounds play: just having one foot in-bounds does not equate to a legal catch; waiting for the ball to touch the floor does not contribute to the legality of the play; and allowing the play to continue contradicts the rule regarding player positioning at the time of possession.