Answer
Option D is correct.
f(x) = (x + 3)²
Step-by-step explanation
When a function g(x) is translated horizontally along the x-axis by a units, the new function is represented as
f(x + a) when the translation is by a units to the left.
f(x - a) when the translation is by a units to the right.
So, for g(x) = x², translated 3 units to the left,
g(x) becomes g(x + 3) = f(x) = (x + 3)²
Hope this Helps!!!