Go to this link to see what I am rating.
In my opinion, number one is is the least helpful because it is talking in texting language and is not mindful of spelling and grammar.
I think that number three is the the most helpful because it is simple and clear and it shows her interest in the particular topic.
Rating- Least helpful to most helpful
1, 6, 7, 4, 8, 5, 2, 3