Why does Mark Twain advise that young people "get up with the lark" rather the sun or some other thing? A lark has a less jolting song than other birds.
It will make them just as happy as the lark is.
They can train the lark to get up later.
To get up with a lark just means to pretend to wake up

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.