n which sentence is the underlined clause an adverb clause? A. Spring brings a resurgence of life to the Arctic, which is home to more than 400 species of plants. B. The territory’s emblematic stone, blue lazulite, looks bluer than the sky does on a clear summer day. C. The ship, which was a nuclear submarine, became the first vessel to pass beneath the North Pole. D. A multitude of animals, whose names may be familiar to you, also survive in the Arctic region.