Read the passage.Near the foothills of the San Juan Mountains in Colorado, there are sand dunes.These are the tallest sand dunes in North America, and they cover thirty square miles. They are part of a national park called Great Sand Dunes.
Answer
A
The tallest sand dunes in North America are found in Colorado’s Great Sand Dunes National Park, covering thirty square miles near the San Juan Mountains.
B
Colorado’s best tourist attraction is the Great Sand Dune National Park—it has thirty miles of sand dunes located near the mountains.
C
When people travel near the San Juan Mountains, they have to drive across thirty miles of the tallest sand dunes in North America.
D
An unlikely sight in the middle of a land-locked state is Colorado’s Great Sand Dunes National Park, which is not a beach, but a thirty-mile sand dune.
Explanation
Choice A best summarizes the passage: it states that the tallest sand dunes in North America are in Colorado, near the San Juan Mountains, and cover thirty square miles as part of Great Sand Dunes National Park. Choice B changes square miles to miles and calls it Colorado’s best attraction, which the passage does not say. Choices C and D also add or change details.
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