Which of Antarctica's attributes is attracting an ever-growing number of tourists?

• its vast landscapes of ice and snow
  Tourists are flocking to see Antarctica's vast landscapes of ice and snow, as well as its abundant wildlife population. Nature-loving tourists can enjoy activities such as kayaking or cross-country skiing.
• its wildlife population
  Tourists are flocking to see Antarctica's vast landscapes of ice and snow, as well as its abundant wildlife population. Nature-loving tourists can enjoy activities such as kayaking or cross-country skiing.
• both of the above
  Tourists are flocking to see Antarctica's vast landscapes of ice and snow, as well as its abundant wildlife population. Nature-loving tourists can enjoy activities such as kayaking or cross-country skiing.