At the end of the first sentence, "last" refers to

Read the sentence from a student’s essay about “the treasure of lemon brown.” greg sees his father differently after he speaks with lemon brown. what revision should the student make to clarify the main idea of this sentence? replace “sees his father differently” with “appreciates his father.” add the phrase “at the end of the story” after the word “differently.” change the wording of “speaks with” to “has a conversation with.” remove “after he speaks with lemon brown” from the sentence.