From the above excerpt the fact which best support Peter's opinion is that STUDENTS WHO PLAY AN INSTRUMENT GET BETTER GRADES THAN STUDENTS WHO DO NOT. This can be inferred from the passage: Peter considered playing an instrument a lot of fun; playing musical instruments is great for brain development. It helps the brain develop neurophysiological distinction which helps students distinguish between certain sounds that can aid in literacy.
American Realism was a style in art, music and literature that depicted contemporary social realities and the lives and everyday activities of ordinary people. The movement began in literature in the mid-19th century, and became an important tendency in visual art in the early 20th century.
Just keep at it! The only way to learn a new language is to keep studying and working at it. I wish you the best of luck!
The ground shakes so hard, and people get hurt