Your answer is the 2nd choice.
If you are not familiar with how √x graphs look, you can find this answer through the method of elimination.
We know that the first graph is a quadratic graph, x², because of its shape, so it's not that one.
The third graph is a cubic graph, x³, which we know because the curve bends and then continues going up.
And the final graph is also a cubic graph, as it represents the same shape as the third graph except it is rotated horizontally.
This leaves us with the second graph, which is the answer.
I hope this helps!