Correct Answer - B.
AWS Trusted Advisor Notification is an optional service that needs to be set up from the dashboard providing a list of recipients and selecting resource items for which status is required.
Option A is incorrect as opening an AWS support ticket is not required to receive AWS Trusted Advisor Notification.
Option C is incorrect as Amazon SNS is a separate service for push notifications.
But it is not required to receive AWS Trusted Advisor Notification.
Option D is incorrect as you need to set up the notifications in the dashboard.