PLEASE HELP !!!
Does each situation describe a survey, an experiment, or an observational study?
Situation #1. patients who visit a clinic of the first are asked to answer 15 questions about their health history.

Situation #2. an employee at the vet's office gives dog owners of a new dog treat. the employee asked the owners whether the dog seems to prefer the treat to the treat they usually receive.

Situation #3. a nurse at a summer camp wants to compare a new ointment for treating cuts to the camp's current ointment. the nurse randomly chooses 10 children with small and applies the new ointment to the cuts. the nurse randomly choose 10 childern with small cuts to recieve the current oitment.