Which feeling does the narrator experience in the passage? a) envy for her uncle’s life b) anger toward her uncle c) empathy for her uncle’s situation d) certainty about what happened to her uncle

Certainty is a word that describes firmness, and a narrator wouldn't potray feelings in a text.
So, your best answer would be "D".
Remember, if the narrator is in the story, they will most likely have feelings.
However, if it is not their complication, it may not apply on the narrator

Hope it helps!