Answer :
The correct AP style sentence is 'The Rocky Mountains are the dominant geological feature of the West.' due to AP style capitalization and article usage rules. The correct multiple-choice option is (1).
The sentence that is correct for AP style is: "The Rocky Mountains are the dominant geological feature of the West." According to AP Style rules, the names of specific places, including regions like the West, should be capitalized. Because the Rocky Mountains are a proper noun, every major word in the phrase should be capitalized. Additionally, AP style uses the article 'the' before plural names of places, such as the Rocky Mountains. The correct multiple-choice option is (1).
