Find the Range of the Function $$f ( x ) = \sqrt { x + 4 }$$

Multiple Choice

Find the range of the function. $$f ( x ) = \sqrt { x + 4 }$$

A) $[ 0 , - 2 )$
B) $( 2 , \infty )$
C) $[ - 2,2 )$
D) $[ 0 , \infty )$
E) all real numbers