The Brain. I hope this is what you are looking for!
At each step of using the key, you're given two choices. Each choice leads to another question until the item is identified.
Answer:
They work collaboratively with faculty, staff and students to promote proper handling of chemicals and chemical wastes and safety practices in areas where chemicals are in use.
Pediatrician
Gastroenterologist
Cardiologist
(I believe almost any kind of doctor would suffice!)
7
12
5
5
4
I really hope this helps!!!