I believe it is #4, i hope this helps you.
Speech allows you to connect with the audience and really get your point across. your voice could inflict a heavier meaning on certain areas of the subject being discussed. essays are more impersonal and usually contain dry text. Eye contact in speeches and an assertive voice will have your audience's attention.
Perhaps in order to build up the suspense. After all, A MOST DANGEROUS GAME is a thrilling piece of work.
You didnt provide us the information for the book..?
