Why would an author try to frighten an audience

Drag the correct answer into the box to complete the sentence. i wore a new pair of shoes for a long walk

Based on this excerpt the authors are mostly likely to attempt to answer which question?

Examine the public service ad. how does this ad transmit a cultural value? by sharing relevant high school graduation statistics by promoting a new type of educational program by reminding the public of the need for new schools by encouraging people to strive for more education