PSAT Writing and Language Question 219: Answer and Explanation

Question: 219

  • A. NO CHANGE
  • B. water source. The Colorado River and other connected ecosystems,
  • C. water source the Colorado River, and other connected ecosystems.
  • D. water source, the Colorado River, and other connected ecosystems,

Correct Answer: D

Explanation:

D. The passage has a complex sentence indicated by the subordinate conjunction "Even though." Commas are necessary to offset the list. See Lesson: Types of Sentences.

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