The correct answer is:
The opponent’s shot was perfectly legal, and they won the point.
From The Code, Items 5 and 19:
Olivia’s opponent confused Item 19, which states that “a player shall concede the point when a ball bounces more than once in that player’s court” with Item 5, which states that a player calls all shots aimed at the player’s side of the net. Even though the ball bounced on the opponent’s side of the net before making it’s way over to Olivia’s side, since it was aimed at Olivia, it was Olivia’s call to make.
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