Correct Answers:

• Use GKE autoscaling to increase the number of replicas for the affected service to distribute the load evenly and improve application availability. This strategy helps mitigate the incident's impact by ensuring the service remains responsive.
• Create a postmortem report to analyze the root cause of the incident and implement corrective actions to prevent similar incidents in the future. This is a critical step in the incident management process for continuous improvement.

Incorrect Options:

• Deploying a canary release is not effective for identifying the root cause of an incident.
• Google Cloud Pub/Sub is not suitable for notifying the on-call team about incidents; Google Cloud Operations Suite is recommended instead.
• Introducing untested changes in production can lead to further instability and is not a best practice.