1. identify three substantial weaknesses in your draft
2. provide an example (the page or paragraph where the change will occur, for instance)
3. identify what changes you will make to strengthen these weaknesses and how you chose to make those changes

what excerpt? i would generally think a.

the mending wall was written by robert frost

the sentence that best describes the tone of the passage from the radio broadcast compared to the passage from the book is b. the radio broadcast has a more surprised tone.

consider the text evidence: in the passage from the book, the description is more matter-of-fact. it is simply describing the things resembling little grey snakes, but there is no urgency in the description. on the other hand, in the passage from the radio broadcast, there is definetely urgency (you can tell from the expression used, "good heavens", which clearly indicates surprise.)