Smart
Mature
Responsible
Intelligent
Sharp
Personally, I would say D. 'All of the above' since they are all very reasonable answers. Hope that helps :)
17: No error
18: Not
19: Was asked
20: Which
Ancient Greek Mythical literature had a few common elements such as frightening creatures, heroic characters and supernatural beings. Contemporary literature, especially those from the horror genre has copied some of the frightening creatures from Greek mythology.