The correctly worded sentence that avoids using a run-on is option B. Public transportation has helped people save money and it also protects the earth's resources.
A run-on is a sentence that occurs when two sentences or more are made into one sentence without the use of the appropriate punctuation mark.
The reason this statement is correctly worded is because a conjunction was used to join both sentences together. The conjunction and was used to connect the sentences.
Read more on https://brainly.com/question/24052703?referrer=searchResults