Correct Answer: D
Option A is incorrect. Basic support does not offer services of Customer Aware Support and does not get a Technical Account Manager.
Option B is incorrect. Standard support does not offer services of Customer Aware Support and does not get a Technical Account Manager.
Option C is incorrect. Enhanced support does not offer services of ‘Customer Aware Support’ and does not get a ‘Technical Account Manager’.
Option D is correct. Premium support gets the services of ‘Customer Aware Support’ and ‘Technical Account Manager’.
https://cloud.google.com/support/docs#support_offerings_overview