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Problem 1 - Entrance Test

Read the passage below, and then choose the best answer to the question that follows. The theory of continental drift was first proposed in the early 1900s. This theory states that all continents on Earth were once connected in a supercontinent, which eventually broke apart. Which of the following best describes the main idea of the theory of continental drift?

Correct: B

The correct answer is B) The continents were once connected in a supercontinent, which eventually broke apart. This is a direct statement of the main idea of the theory of continental drift, which is supported by the passage. Choice A is incorrect because while the movement of tectonic plates is related to the theory of continental drift, it is not the main idea. Choice C is incorrect because the continents are not stationary and unchanging, according to the theory. Choice D is incorrect because erosion and sedimentation are not the primary causes of the formation of continents.