Read the excerpt from "The Gift of the Magi." Jim stopped inside the door, as immovable as a setter at the scent of quail. His eyes were fixed upon Della, and there was an expression in them that she could not read, and it terrified her. It was not anger, nor surprise, nor disapproval, nor horror, nor any of the sentiments that she had been prepared for. He simply stared at her fixedly with that peculiar expression on his face.

In this excerpt, Jim’s character is developed

indirectly, through his lack of action.
directly, through his physical appearance.
directly, through his personality that is concerned with change.
indirectly, through his lack of feelings for Della.

indirectly, through his lack of action.  

Explanation:

Jim does nothing in this excerpt apart from look at Della who then tried to interpret this look by diagnosing it for the presence of emotions that she had prepared for but instead found none.

We are therefore introduced to Jim's character indirectly through Della's eyes as she analyses his lack of action.

the pronoun reference replaces a noun, but you have to make sure there's no room for confusion.

in the first sentence "her" could be referring to shely or to the sister. the answer there is "shelly called her sister and told her about the new baby."

in the second sentence "it" could be referring to the roof or the floor. the answer there is "since the roof leaks on the family room floor, we need to repair the roof."