[Answer] On the Routeburn Track, a three-day, 20-mile trek in New Zealand, you'll pass through two national parks. Which ones?

Step 1 : Introduction to the question " On the Routeburn Track, a three-day, 20-mile trek in New Zealand, you'll pass through two national parks. Which ones? "

...1. Fiordland and Mount Cook 2. Mount Aspiring and Arthur's Pass 3. Fiordland and Mount Aspiring 4. Victoria Forest and Annette's Pass