HELP ASAP PLEASE NOT SPAM

Which statement best explains how a character communicates the author's purpose in The Number Devil?

1.Robert dreaming about a racing bike with twenty-eight gears reveals that the author's purpose for writing is to inform.

2.Robert having dreams that make him wake up drenched in sweat reveals that the author's purpose for writing is to entertain.

3. The number devil describing numbers as simple reveals that the author's purpose
for writing is to persuade.

4. The number devil asking Robert why he is so suspicious reveals that the author's purpose for writing is to inform.