The app builder should create a sharing rule that grants the users Read/Write access to the Application records. A sharing rule is a type of rule that can extend record access to groups of users based on certain criteria. In this case, the app builder can create a sharing rule that grants Read/Write access to the Application object to the recruiters based on their role, public group, or queue. This will allow them to edit the Application records related to any Internship record, regardless of the ownership. Option A, B, and C are not ways to configure the proper access.

To show Component as a related list on Product, a lookup relationship on Component to Product should be created. A lookup relationship creates a loose association between two objects and allows users to relate records from one object to another. A lookup relationship also allows users to add the related list of the child object to the parent object's page layout.