Identify the character's trait.

Kara's long, brown hair whipped in the wind, her knobby knees green with grass stains from the day's soccer game

http://www.answers.com/trait

Read definition #1.

I see two traits mentioned in this sentence. Do you see them? What are they?

Are the traits long,brown hair and knobby knees?

Yes, those are right.

Thank.

You're welcome. =)

The character trait that can be identified in this sentence is "athletic." This is evident from the fact that Kara has grass stains on her knobby knees from playing soccer.