When a master-detail relationship is created between two objects, Salesforce automatically creates a standard report type that allows users to report on the parent and child together.
* Why A (Galaxy__c with Star__c) is correct:Exact Extract:"When you create a master-detail relationship, Salesforce automatically creates a primary report type that includes records from both the master and its detail." - Salesforce Help | Standard Report TypesTherefore, a "Galaxy__c with Star__c" report type is automatically generated, allowing users to create reports showing all child records (Star__c) related to each parent (Galaxy__c).
Why A (Galaxy__c with Star__c) is correct:Exact Extract:"When you create a master-detail relationship, Salesforce automatically creates a primary report type that includes records from both the master and its detail." - Salesforce Help | Standard Report TypesTherefore, a "Galaxy__c with Star__c" report type is automatically generated, allowing users to create reports showing all child records (Star__c) related to each parent (Galaxy__c).
* Why not B:The parent-to-child relationship drives the report type. A "Star__c with Galaxy__c" type is not automatically created.
* Why not C or D:Custom report types are only needed if you want to include additional related objects or modify relationships; Salesforce automatically provides one for master-detail pairs.
References:
Salesforce Help | Standard Report Types
Salesforce Platform App Builder Exam Guide | Data Modeling and Management