Problem: A nursing student witnessed health care providers not following the proper PPE guidance related to infection control procedures. To evaluate the concern, the nursing student is surveying staff knowledge, skills, and attitudes related to infection prevention protocols. What question asked by the student is within the patterns of events level using a systems thinking mental model? Question options: a) What is the current policy for infection prevention protocols? b) What are the hospital acquired infection rates on this unit within the last six months? c) How do isolation signs get put into place? d) Who is responsible for infection prevention?