To reflect the function \( f(x) = (2 - x)^2 + 1 \) over the y-axis, we need to replace \( x \) with \( -x \) in the function.
Starting with the original function:
\[ f(x) = (2 - x)^2 + 1 \]
Now, replacing \( x \) with \( -x \):
\[ g(x) = (2 - (-x))^2 + 1 \] \[ = (2 + x)^2 + 1 \]
Therefore, the equation of its reflection, \( g(x) \), is:
\[ g(x) = (x + 2)^2 + 1 \]
So the correct response is:
\[ g(x) = (x + 2)^2 + 1 \]