I believe your answer would be "Because she loves them." because it is not a complete thought.
In this excerpt, Jim's character is developed indirectly, through his lack of action.
<h3>What is Characterization?</h3>
This refers to the use of character development to give the characters changing roles in a story as the plot develops.
Hence, we can see that from the complete text, Jim's character is developed indirectly through his actions and inactions as he was unable to express his feelings for Della early enough.
Read more about characterization here:
brainly.com/question/1393329