Write the equation for a parabola with the vertex at (–1, 3) and the equation of the directrix y = 1.

For a vertical parabola, the standard form is (x − h)² = 4p(y − k), where (h, k) is the vertex. The directrix is 2 units below the vertex, so p = 2 and the parabola opens upward. Substituting h = −1, k = 3, and p = 2 gives (x + 1)² = 8(y − 3), which is choice B.

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