The sentence that agrees with its subject is "A tornado during the late summer months is typical for many midwestern states."
Have a great base and a great subject
The sentence which has the phrase, "A high-pitched screeched", as the subject of a sentence is: D. Suddenly, a high pitched screech , the crow's call, pierced the air. Hope that helps.
A good person stands and watches as someone gets bullied. Just because they watch doesn't make them bad but they did nothing so they're not necessarily all good either.