Halfway through a project, the project sponsor is replaced by another peer who was not previously engaged in the project. The new project sponsor has rejected most of the project artifacts, and the…

A new, unengaged sponsor who rejects project artifacts indicates a lack of understanding or alignment with the project's goals and progress. Performing a stakeholder analysis upon their entry would have identified their influence, interests, and potential information needs, allowing the project manager to proactively engage and onboard them, setting clear expectations and ensuring their understanding of the project's direction and previous accomplishments.

Holding a governance meeting to review the increment is a reactive measure; the problem stems from the new sponsor's lack of prior engagement and understanding, which stakeholder analysis would address preventatively.

Escalating the issue to get an increment approved is a reactive crisis management step, not a preventative action to avoid the situation in the first place.

While conducting a product iteration review with the new sponsor is good, it's a specific engagement method that comes after understanding their needs and influence through a stakeholder analysis; it's not the primary preventative action.