Firetrand936viz
Answered

A bird called a ptarmigan has feathered feet. The feathers on the feet of the ptarmigan are most helpful when this bird
A digs up food.
B walks in deep snow.
C climbs rocky cliffs.
D runs under bushes.

Sagot :

Kikoriotsoviz
Since the feathers on their feet protects them from extreme cold then, it is most helpful when they're walking in deep snow. So the answer is B.

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