Read the excerpt from Wonder by R. J. Palacio.

"I have a question . . . ," I said, trying to keep my voice steady. "Um. What exactly is homeroom? Is that like a subject?"

"No, that's just your group," explained Charlotte, ignoring Julian's smirk. "It's like where you go when you get to school in the morning and your homeroom teacher takes attendance and stuff like that. In a way, it's your main class even though it's not really a class. I mean, it's a class, but – "

"I think he gets it, Charlotte," said Jack Will.

"Do you get it?" Charlotte asked me.

"Yeah." I nodded at her.

Which detail helps readers best visualize Julian’s character?

Charlotte ignores Julian’s smirk and answers August.
Julian smirks when August asks a question.
Jack Will interrupts Charlotte’s explanation.
August has never heard of a homeroom before.