ANSWER:
D. (-2,3)
STEP-BY-STEP EXPLANATION:
The equation of a parabola has the following form:
[tex]\begin{gathered} 4p\cdot(y-k)=(x-h)^2 \\ \text{where, (h, k) is the vertex} \end{gathered}[/tex]In this case:
[tex]\begin{gathered} y-\: 3\: =\: -\mleft(x+2\mright)^2 \\ (h,k)=(-2,3) \end{gathered}[/tex]Therefore, the vertex is (-2, 3)
