Is fast a short vowel

yes, it is a short vowel.

illogical logic there is a corridor between the garage and the balcony. illogical logic i rent an apartment with four rooms: a kitchen, a bedroom, a living room illogical logic xavier starts a new job in another city. illogical logic the rents in this cellar are really too expensive. illical logic barbara's studio has a garden. illogical logic

explanation: the line "to save the day, harry must get past a scary three-headed guard dog" from the summary best justifies the conclusion that harry potter and the sorcerer’s stone was influenced by ancient greek mythological literature. the three other choices had nothing to do with ancient greek literature - and the words "three-headed guard dog" are what makes that choice the correct answer.