As the week draws to a close, Nancy reviews the lessons she gave to her students, thinks about the papers she has graded and returned, and speculates on the exam that she wrote to give on Monday morning. Which stage of the GTD model is Nancy currently engaging in?

reflecting

Explanation:

The Getting Things Done is a time management method in which it's workflow contains five different stages. these stages being capture, clarify, organize, reflect, and engage. Based on the information provided within the question it can be said that Nancy is currently engaging in the fourth stage known as reflecting. This stage focuses on thinking about the information and actions that have been performed in the previous stages in thinking about future actions based on them.