Which of the following is NOT a Scrum event?

Correct answer: Sprint Forecasting

Option C is correct because Sprint Forecasting is not an official Scrum event defined in the Scrum Guide; the five formal Scrum events are the Sprint itself, Sprint Planning, Daily Scrum, Sprint Review, and Sprint Retrospective. Option A is incorrect because the Sprint Retrospective is a defined Scrum event where the team inspects itself and creates a plan for improvements to be enacted during the next Sprint. Option B is incorrect because the Sprint Review is a defined Scrum event held at the end of the Sprint where the Scrum Team and stakeholders inspect the Increment and adapt the Product Backlog. Option D is incorrect because Sprint Planning is a defined Scrum event that initiates the Sprint by establishing the Sprint Goal and selecting backlog items the Development Team will work on.