There are two correctly punctuated sentences here:
1. That's the other thing I learned: being active is just as important as eating better foods.
2. Over the years, many of us have read the words of Henry B. Adams: "A teacher affects eternity; sge can never tell where her influence stops."
B) because sectioning them is easier to read and see and helps maintain order throughout the presentation of the article. Hope I helped! :)
~ Destiny ^_^
Last sentance is incorrect
I can't help you but try adding adjectives and detailed descriptions maybe that's what your teacher wants?