Exam Certified Sharing and Visibility Architect topic 1 question 38 discussion

I disagree, this should be A. In the Salesforce help article https://help.salesforce.com/s/articleView?id=sf.security_sharing_rule_types.htm&type=5 it states: 'An owner-based sharing rule opens access to records owned by certain users. For example, a company's sales managers need to see opportunities owned by sales managers in a different region. The U.S. sales manager could give the APAC sales manager access to the opportunities owned by the U.S. team using owner-based sharing.' This question is, therefore, a prime example of a use case for owner-based sharing rules.

A. is good only if we need a group of sales managers. The question specifically asks for one. D. is the best answer, because Opportunity teams are designed for collaborative selling, allowing you to add team members with specific roles and permissions for particular deals. We are not looking for general record ownership changes. Once "Enable Team Selling" is enabled, the user can navigate to their Settings > Advanced User Details. Under Default Opportunity Team, they can add the sales manager and define permission and role. User can then add and delete this member whenever they want.

...its only one sales manager from the Japan, not a whole group of managers

nerdycute answer is correct

I think the correct answer is D because, in this case, Australia may be added to by the Japan sales managers directly to help them without administrative setup support.