Diane's casts of the tongue and paw allowed zoo visitors to share her amazing experience. People felt the roughness of the big cat's tongue and spread a hand inside the palm of its giant paw. This, she decided, was one of the coolest things I have ever done. She savored the moment, knowing that far graver matters were always just a phone call away. —Bone Detective: The Story of Forensic
Anthropologist Diane France,
Lorraine Jean Hopping

Based on the details from the last paragraph of the text, the author’s secondary purpose for writing it to persuade readers to

visit the zoo.
become forensic anthropologists.
contact Diane if they have a bone mystery that needs to be solved.
agree that Diane France is an interesting person.