In "The Unbreakable Code," why did John’s grandfather speak sternly when talking about the Navajo language?

A. He had forgotten Navajo when he was younger as well.

B. He was afraid John’s friends would keep him from speaking Navajo.

C. His grandfather had taught him Navajo

D. The Navajo language had helped his country win WWII.

PLS HELP I WILL MARK BRAINLIST IF CORRECT!! :)

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.

a ^^ hope this