When telling a story, using classifiers and body movements to describe form and shape might help to describe inanimate objects
indicate a specific time period
shift between character roles
show a change in perspective

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.