Answer:
The second one: You are, if I'm not mistaken, a good person for this experiment.
Explanation:
The first sentence, "You are, if I'm not mistaken a good person, for this experiment." does not have a comma after "mistaken", where there should be one. After "a good person", there should not be a comma.
Answer:
i didnt understamd it pls in italiana hoola
Its good for grades 3+, age 8+ and family and also who like historical fiction. It also also good to learn about the importance of water! It saves lives, helps people, and brings us together by giving water to help them to lead a good life.
It is a fragment because a run on, is something that keeps on going and wont stop and won't put like a period to stop it, which is such as a long sentence.