question: who can prevent injury by forming protective plates over the ends of the fingers?
choices.text: lamphreys keratin Cartilage butterflies ants people neurones snakes
choices.label: A B C D E F G H
fact2: People have fingernails.
combinedfact: people prevent injury by forming protective plates over the ends of the fingers
formatted_question: who can prevent injury by forming protective plates over the ends of the fingers? (A) lamphreys (B) keratin (C) Cartilage (D) butterflies (E) ants (F) people (G) neurones (H) snakes