What is an out-of-bounds (OB) disc?

• A. A disc that lands outside the boundary lines or is caught outside them.
• B. A disc that lands in the end zone.
• C. A disc that is touched by a defender before it lands.
• D. A disc that bounces more than once in bounds.

Answer: (A)

Out-of-bounds is defined by the field boundaries. The disc is considered out of bounds whenever it lands outside the boundary lines or when a foul or catch happens while a player is outside the playing area, so possession is returned or reset accordingly. This matches the option describing a disc that lands outside the boundary lines or is caught outside them.

Why the other ideas aren’t OB: landing in the end zone is still in play and is part of the scoring area, not out of bounds; a defender touching the disc before it lands doesn’t by itself make the disc OB unless the contact happens outside the boundary or the disc then goes out of bounds; and a disc that bounces in bounds remains in play, so it isn’t out of bounds just because it bounced.