As a new manager, you are shocked to learn that your unit is still using heparin in heparin locks. You are aware of evidence related to this practice and want to change this practice as quickly as possible on your unit. You are in which stage of Lewin's stages of change?

The correct answer is C: Unfreezing. In Lewin's stages of change, unfreezing is the initial stage where individuals become aware of the need for change and are open to new ideas. In this scenario, as a new manager, realizing the outdated practice of using heparin in heparin locks indicates the need for change. The shock signifies the beginning of awareness and readiness for change. Refreezing (A) occurs after the change has been implemented and stabilized, not at the initial stage. Moving (B) and Experiencing the change (D) are stages that come after Unfreezing, where actual change is implemented and integrated.