Original sentence: The strongest argument for the altruistic explanation involves a situation very similar to Binti's, in which a male gorilla named Jambo, of Jersey Zoo, protected a child who had fallen into his enclosure
Edited sentence: The strongest argument for the altruistic explanation involves a situation very similar to Binti's, in which a male gorilla named Jambo, of Jersey Zoo, protected a 5-year-old child who had fallen into his enclosure