Raj sat at a broad table in the back of the school library and ran his finger quickly over the text of a book called Syntactic Conventions in
Idiomatic Expressions. On his left, a stack of 12 more books - all
thick, all with brown, black, and earth-red covers - sat and waited for
his consumption. Suddenly, Millicent, a troublemaker he knew from
history class, peddled through the library on a bicycle while a teacher
chased her. Raj looked up briefly, raised an eyebrow, and then went
back to reading.
What does the dialogue in the passage most clearly reveal about Raj?
A. He is nervous.
B. He is arrogant.
C. He is bored.
D. He is serious.