Which of the following national parks is home to the highest peak in North America?

What is the smallest national park in the United States? Which national park is known for its unique hoodoos rock formations? In which country is the Serengeti National Park located? What is the name of the largest national park in Canada? In which country is the Torres del Paine National Park located? What is the name of the oldest national park in the world? In which country is the Kakadu National Park located? In which country is the Ordesa y Monte Perdido National Park located?