Which of the following are not typical responses to risks?

Which of the following are not typical responses to risks?

Complete root cause analysis to understand why the situation has occurred.

Reduce the probability of the threat occurring or the impact on the project.

Change objectives or practices to change the cause of the threat so it can no longer occur.

There are no acceptable or viable approaches to take to avoid or reduce, so the threat and any residual risk must be managed.

Prepare a risk management plan to document the risk and give it to your sponsor.

Pass the responsibility for bearing the impact of the threat from one party to another.