Multiple choice general knowledge A spell that makes an item or creature look totally silly Peskypiksi Pesternomi Riddikulus Locomotor mortis serpensortia Reveal answer Fill a bubble to check yourself B Correct answer Explanation Riddikulus is the spell used to defeat a Boggart by making it appear amusing or silly, exactly as the question describes. Peskypiksi Pesternomi is not a real spell, Locomotor Mortis is the Leg-Locker Curse, and Serpensortia conjures a snake.