I believe the thesis in this is actually the first sentence considering the rest of the story talks about that first sentence.
<span>"The Gift of the Magi"
Della is devoted to her husband. Her unconditional love for him is shown
when she chopped off her prize long beautiful hair, in order to buy him a new
strap for his old watch. Meanwhile, Jim
also shows his devotion and love for his wife, when he traded his watch for Della's new comb. Their love for each other made them even stronger, as
they sacrificed their most prized possession for the other person’s happiness.</span>
The passive voice can be effectively used to
The correct option is A. Create an impersonal tone. The important thing is not what or who has done the action. That's why passive voice is so used in newspaper articles.
B spelling hint . hope this helps :D