Find the Domain of the Function $q ( w ) = \sqrt { 1 - w ^ { 2 } }$

Multiple Choice

Find the domain of the function. $q ( w ) = \sqrt { 1 - w ^ { 2 } }$

A) -1 ? w ??1
B) w ??-1 or w ? 1
C) w ? 0
D) w ? 1
E) all real numbers