Answer:
Learning new verbs allows me to speak French like a native speaker
I’ve never read the story but from all of the options here I would say the 4th one. “She trust Aaron to treat her well” If you don’t think so, my second option would be “She enjoys the cold and the snow.”
Traer in the preterite tense for third person singular has the -o ending, but traer is an irregular verb in that you must add a j when conjugating this person. Therefore the answer is "trajo."
If you have other problems like this, websites like spanishdict.com are good for checking your work, and creating a table for the verb ("yo traje, t<span>ú </span>trajiste") to figure it out. :)