Identify 3 specific examples of imagery in the poen "changgan memories"

martians or other types of aliens represent a unique fear as opposed to zombies. vampires and other types of monsters.   in most sci-fi stories, aliens come from other worlds and have different or more advanced technology.   abductions and experimentation on human bodies that involve these technologies, or the use of these technologies against human beings and the use of unknown "powers", are a type of fear that's different from that of other types of monsters.  

edmund spenser and john bunyan is the answer. hope i !

a. to introduce the audience to important characters .

b. to inform the audience where the story takes place .

e. to lay out specific details about different plot points.