Which of the following is NOT part of Agile ceremonies or events?

The correct choice is indeed the project kickoff, as it is not classified as an Agile ceremony or event. In Agile methodologies, specifically Scrum, there are defined ceremonies that facilitate the iterative and incremental nature of project development. The key ceremonies include sprint planning, where the team plans the work to be done in the upcoming sprint; the daily scrum, a brief meeting for team members to sync up on progress and any impediments; and the sprint review, which occurs at the end of a sprint to inspect the increment and adapt the product backlog if needed.

In contrast, a project kickoff typically occurs before the Agile process begins and serves as a formal meeting to launch the project, establish objectives, and clarify roles. While it is an important part of traditional project management, it does not fit within the Agile framework's iterative ceremonies that focus on ongoing collaboration throughout the lifecycle of the project. Thus, the project kickoff is not included in the Agile ceremonies.