By default who has complete administrative control over all resources in the respective AWS account?

Answer options:

A.AWS Support Team
B.AWS Account Owner
C.AWS Security Team
D.AWS Technical Account Manager (TAM)

Correct Answer: B
Option A is incorrect. AWS Support provides a mix of tools and technology, people, and programs designed to proactively help you optimize performance, lower costs, and innovate faster. 
Option B is correct. The entire control of data within an AWS account is with the Account Owner.
Option C is incorrect. The Security Specialist team is a customer-facing role where we get to talk to customers about the security, identity, and compliance of AWS. We help enable customers to securely and compliantly adopt the AWS Cloud.
Option D is incorrect. A technical account manager provides technical support to customers before and after a sale. The technical account manager will work with the client to build strong relationships and ensure customer satisfaction.
For more information on AWS Account identifiers, please refer to the below URL:
https://docs.aws.amazon.com/general/latest/gr/root-vs-iam.html
https://docs.aws.amazon.com/organizations/latest/userguide/orgs_manage_accounts_create.html