Which factor will affect the quantity of available Trusted Advisor checks?
Whether at least one Amazon EC2 instance is in the running state
The AWS Support plan
An AWS Organizations service control policy (SCP)
Whether the AWS account root user has multi-factor authentication (MFA) enabled
Explanations:
The state of Amazon EC2 instances does not impact the availability of Trusted Advisor checks.
The AWS Support plan determines the level of Trusted Advisor access. Only Business and Enterprise support plans have full access.
While SCPs may restrict actions, they do not affect the quantity of Trusted Advisor checks available.
Enabling MFA for the root user does not influence the number of Trusted Advisor checks available.