Someone check my answers please

Which sentence in this excerpt from the time machine suggest that the time travelled will later realize that his assumptions about future society are incorrect

Imagery appeals to the five sensescreates an emotional responseplays a key role in robert frost's "birches"all of these

Which revision fixes the dangling modifier in this sentence? while reading a new mystery book, my dog curled up in my lap and slept. a.) curled up in my lap, my dog slept while reading a new mystery book. b.) while i was reading a new mystery book, my dog curled up in my lap and slept. c.) my dog, while reading a new mystery book, curled up in my lap and slept. d.) curling up in my lap while reading a new mystery book, my dog slept.