My teacher talked for an hour about the uselessness of long speeches. a metaphor. b. simile. c. irony. do idiom

Can someone explain this to me clearly plz

Which choice is a major detail from paragraph two? a) the great wall is a large network of several walls and towers. b) the great wall looks like a long wall snaking its way across china. c) the great wall was constructed over hundreds of years beginning in 221 b. c. d) the great wall construction encouraged several independent kingdoms to unite.

What did the radio version of the war of the worlds include in the broadcast to create pathos and keep the audience's attention?