A parabola can be represented by the equation x squared is equal to negative 20 y What are the coordinates of the focus of the parabola?

The standard form for a vertical parabola is x² = 4py, where the focus is (0, p). Comparing x² = −20y with that form gives 4p = −20, so p = −5. Therefore, the focus is (0, −5), choice D.

AI-written and checked against the verified answer.