Because the risk management plan is not an input to the control stakeholder engagement process. There are four inputs to this process: project management plan, issue logs, project documents, and work performance data. 1 is incorrect because the project management plan is an input to the control stakeholder engagement process. 2 is incorrect. The issue log is an input to the control stakeholder engagement process. 3 is incorrect. Work performance data is an input to the control stakeholder engagement process.