question 2(multiple choice worth 2 points)\n(04.06 mc)\nwhich of the following sentences uses a signal…

question 2(multiple choice worth 2 points)\n(04.06 mc)\nwhich of the following sentences uses a signal phrase to effectively introduce information from an outside source?\none of my sources stated that national parks are beautiful places to visit.\naccording to park ranger sarah johnson, national parks attract millions of visitors each year.\nmy aunt believes that visiting national parks can be an unforgettable experience.\nnational parks are popular tourist destinations—sarah johnson.
Answer
Brief Explanations:
A signal - phrase effectively introduces outside information and attributes it to a specific source. "According to park ranger Sarah Johnson" clearly identifies the source and is a proper signal - phrase. The first option is too general about the source, the third option uses a non - authoritative personal source (aunt), and the fourth option has an improper structure for a signal - phrase.
Answer:
B. According to park ranger Sarah Johnson, national parks attract millions of visitors each year.