Answer:
Being selfless means you are kind enough to put other's needs before yourself. So Tris is considerate, and probably helps other people before helping himself (sorry if its another gender I don't know what Tris's gender is.)
Explanation:
I hope that helped.
If you got it mixed up with being hopeful just remember a hopeful person doesn't have to be kind, and an assertive person often has a fiery personality.
