What change should be made in sentence 12?

a. delete and

b. change learn into leared

c. change there's to theirs

d. no change should be made

that there are poor conditions

a. the scene is structured as a dialogue between two characters in their own informal language.

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.  

c is the final ! :