Which of the following defines the minimum level of engagement of a stakeholder?

In stakeholder engagement models used in project management frameworks, passive engagement is the baseline floor - the stakeholder has acknowledged awareness of the project but exerts no effort, provides no input, and takes no action. All higher engagement levels such as interested, contributing, or invested require progressively more active participation.

Invested implies a stakeholder has committed resources, attention, or personal stake in the project outcome, which is a higher level of engagement than the minimum.

Contributing means the stakeholder is actively providing work, information, or resources, placing them well above the minimum engagement threshold.

Interested indicates the stakeholder is paying attention and seeking information about the project, which is still a step above purely passive awareness.