Question

which text best completes the sentence?
visitor statistics indicate that in 2013, great smoky mountains national park was
a more popular tourist destination than yosemite national park
a more popular tourist destination than any national park
a popular tourist destination than yosemite national park
the most popular tourist destination than yosemite national park

Explanation:

The sentence is making a comparison between Great Smoky Mountains National Park and Yosemite National Park. The correct form is the comparative "more popular" (since it's a comparison between two). "Any national park" is incorrect as it would imply comparing to all parks (including itself which is illogical). "Popular" (without "more") is incorrect as it lacks the comparative for two - park comparison. "The most" is superlative (for more than two) and also incorrect here.

Answer:

a more popular tourist destination than Yosemite National Park