首先，先来看例题：
Two species of deer have been prevalent in the Puget Sound area of Washington State in the Pacific Northwest of the United States. The blacktailed deer， a lowland， west-sidecousin of the mule deer of eastern Washington， is now the most common. The other
species， the Colombian whitetailed deer， in earlier times was common in the open prairiecountry， it is now restricted to the low， marshy islands and flood plains along the lower Columbia River.
Two species of deer have been prevalent in the Puget Sound area of Washington State in the Pacific Northwest of the United States. The blacktailed deer， a lowland， west-sidecousin of the mule deer of eastern Washington， is now the most common. The other
species， the Colombian whitetailed deer， in earlier times was common in the open prairiecountry， it is now restricted to the low， marshy islands and flood plains along the lower Columbia River.
According to paragraph 1， which of the following is true of the white-tailed deer of Puget Sound
