Follow-through interference occurs when:

• A. The pitcher's arm motion distracts the batter.
• B. The batter contacts the catcher prior to the pitch.
• C. The bat hits the catcher after the batter has swung at a pitch and hinders action at home plate or the catcher's attempt to play on a runner.
• D. None of the above.

Answer: (C)

Follow-through interference happens when the batter’s follow-through with the bat collides with the catcher after the swing and disrupts the catcher’s chance to make a play on a runner, usually at home plate. In this situation, the bat striking the catcher during the follow-through hinders the catcher’s attempt to throw or tag, so the play is ruled dead and the batter is out for interference. This protects the defensive play and prevents the batter from gaining an advantage by contacting the catcher after swinging. The distraction of the pitcher or contact before the pitch doesn’t fit this scenario, and none of the above isn’t correct because the specific event described—bat making contact with the catcher during the follow-through and hindering a play—is precisely when follow-through interference occurs.