Final answer:
In a custom report type, up to 2 objects can be related to the primary object.
Step-by-step explanation:
In a custom report type, it is true that up to 2 objects can be related to the primary object.
A custom report type in Salesforce allows you to define the relationships between objects and determine which fields to include in the report.
For example, in a custom report type for a company that sells products, you can have the primary object set as 'Product' and relate it to 2 other objects, such as 'Opportunity' and 'Account'.