[Q]: Determine the topic of the passage. "It is the great extensor muscle of the knee, forming a large fleshy mass which covers the front and sides of the femur ." Topic:
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[A]: Quadriceps femoris muscle


[Q]: Determine the topic of the passage. "It is noted for both its arid conditions and its Basin and range topography that varies from the North American low point at Badwater Basin to the highest point of the contiguous United States , less than away at the summit of Mount Whitney ." Topic:
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[A]: Great Basin


[Q]: Determine the topic of the passage. "Vitamin B12, vitamin B12 or vitamin B-12, also called cobalamin, is a water-soluble vitamin with a key role in the normal functioning of the brain and nervous system , and for the formation of blood ." Topic:
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[A]: Vitamin B12


[Q]: Determine the topic of the passage. "A limited liability company (LLC) is a flexible form of enterprise that blends elements of partnership and corporate structures." Topic:
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[A]:
Limited liability company