Complete the sentence about Grizzly bear with the correct year: In ______, Rausch reduced the number of North American subspecies to one, Ursus arctos middendorffi.

Answer and explanation

Correct answer: C. 1963

  1. Step 1: In 1963, Rausch reduced the number of North American subspecies to one, Ursus arctos middendorffi. Answer: 1963. Why not the others: 1943, 1973 and 1988 don't fit.

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