Which solution will meet these requirements?
Delete the read replica Do not make changes to the primary instance
Resize the read replica to a smaller instance size Do not make changes to the primary instance
Resize the read replica to a larger instance size Resize the primary instance to a smaller instance size
Delete the read replica Resize the primary instance to a larger instance
Explanations:
Deleting the read replica will put all read load on the primary instance, potentially impacting performance since it already has 60% CPU usage.
Resizing the read replica to a smaller instance size is appropriate as its CPU usage is low (25%) post-peak period. The primary instance still handles its load without issues.
Increasing the read replica size is unnecessary since its CPU usage is low. Reducing the primary instance size could impact performance since it already has high CPU usage.
Deleting the read replica will increase the load on the primary instance, which is already at high CPU usage, and resizing it larger would add cost without clear benefits.
I arrange that the answer is:
Resize the read replica to a smaller instance size Do not make changes to the primary instance