The text states that mostly students, scholars, and performers are allowed to see the music treasures. This is because these groups of people
A can usually drive cars or travel.
B can make digital copies of the items.
C have used other kinds of libraries.
D have a true need to see the items.
The correct answer is D have a true need to see the items.
Explanation: The text indicates that students, scholars, and performers are allowed to access music treasures because they likely have a genuine purpose or necessity for studying or using those materials in their academic or professional work.