Read the excerpt from "Bone Detective," by Lorraine Jean Hopping. Diane stood in front of a mirror and stuck out her tongue. It looked like a rosy pink welcome mat to her delicate insides. Her usual rubber mold formula was out of the question—too toxic. She wondered, What is safe to swallow, fast and easy to apply, and hardens quickly into a firm mold?

One of her horse-riding pals, a veterinarian named Mary Wright, had the alginate. Mary told Diane that alginate was a pink gummy material used to make molds of teeth. If it was safe for pets, it should be safe for a tiger.

And people, too, Diane thought.

Based on the details in this excerpt, the author would most agree that Diane France is

generous and friendly.
cautious and fearful.
unwise and hasty.
curious and resourceful.