How do the children report their findings to Mr. Benedict?

The children report their findings to Mr. Benedict through a secure method of sending messages, which reflects the importance of confidentiality and safety in their communications. Throughout "The Mysterious Benedict Society," the nature of their mission involves sensitive information regarding the sinister activities they are investigating. A secure communication method ensures that their discoveries do not fall into the wrong hands, maintaining the integrity of their efforts and protecting their identities. This choice emphasizes the themes of trust and intelligence that are central to the story, showcasing the cleverness of the children and the cautious approach they take in their roles as secret agents. Meeting in person, using phones, or sending telegrams could potentially expose their plans or identities, which is why a secure method is preferred.