Answer
Graph "G" is the correct sketching.
Work Step by Step
For $y = \sqrt{x+3},$
when $x=−3, y=0$
The curve passes through $(−3,0)$
Since the graph of $y=\sqrt{x+3}$ is the same as the graph of $y=\sqrt{x}$ but with a horizontal translation of 3 units to the left, graph "G" is the correct sketching.