I would say A,. Electronics in the classroom negatively effect (not effects) the learning environment. This will then be your reason for your entire paper, allowing you to back it up easily
However, On the other hand, One instance of this
The author's main purpose was the explain that the Community Service Council was effectual to high school students. The personal backstory was to add more evidence of the effectiveness.
That will be difficult since we don’t actually know what the text is about.