y = ( x + 3)^2 - 3
The " +3 " inside the parentheses [ contrary to intuition] shifts the graph of y = x^2 3 units to the left
If it was "-3", it would shift the graph 3 units to the right
The " - 3 " at the end shifts this down 3 units
So....."b" is correct
Here's the graph of the transformations : https://www.desmos.com/calculator/xruxghuvu5