martin observed that the streetlights in his neighborhood were not working and the neighborhood could be dangerous and would effect the safety of the neighborhood. martin decides to write letters to his uncle, the mayor, and the local newspaper. Which tone mostly clearly matches the intended audience for each letter

throughout history, economists have always thought  ..

answer: the tobacco industry has traditionally been one of the most important industries in north carolina and a backbone of the state's agricultural heritage. yet as the north carolina economy continues to transition from an agricultural economy to a manufacturing and, increasingly, service-based economy, the industry faces new challenges, both at home and abroad

explanation:

a: it is sound because it cites an expert’s opinion.