Which explicit statement of an author's purpose for writing is an example of a persuasive approach? a. “this book should motivate every person who cares about freedom to become more involved in government.” b. "my goal is to relate the story of the events of that day as i witnessed them.” c. “i will drill down into each characteristic to find what is working and what isn't.” d. “my work is designed to take your mind off your problems and, i hope, give you a laugh or two.”