Scope and Access Practice Test

In student records, a StudentRecord class stores studentId and grades to protect sensitive data. The counselor app calls updateGrade to change grades through validation rules. A protected method computeGpa aggregates grades for reports without exposing raw calculations. What is the outcome if grades is changed from private to public?

In a library system, Book stores title and author privately to avoid patron edits. The front desk uses public borrowBook and returnBook to enforce rules. A protected calculateOverdueFee supports internal charges. How does the chosen access modifier affect access to the title field?