The answer is C, setting.
Answer:
The run on sentence here is, "Sprained ankles are common injuries for athletes, a sprain may not even need treatment."
Explanation:
A run-on sentence happens when two or more independent clauses are fused incorrectly. There are two types of run-on sentences. There are fused sentences and comma splices.
A fused sentence transpires when independent clauses work collectively with no signs of punctuation or correlating conjunctions to distribute them. A comma splice befalls when two or more independent clauses are linked exclusively by a comma.
When talking about, "Sprained ankles are common injuries for athletes, a sprain may not even need treatment." The part that is wrong here is the comma before "a." This is wrong because this is a massive voice missue.
The comma would mean to take a pause, which is a missue in human beings voice.
To correct this you would put a period for a full stop in that sentence and continue with the subject afterwords.
"Sprained ankles are common injuries for athletes. A sprain may not even need treatment.
You subsitute the comma with a period and make the lowercase an uppercase A.
Answer: the awnser would be C Pompeii was this old awsome city near Naples in Italy, built at the foot of a weird mountain.
Explanation: BECAUSE, you have to think about what the fourth graders would be interested in, sure maybe some would be interested in the others. But what would get them into it the most. "weird mountain" would definitely. They would probably wonder why and want to hear more so they could find out why the mountain is weird. That's what I think