Question

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Explanation:

A parabola is the U-shaped (or upside-down U-shaped) graph of a quadratic function, which has a single curve that opens either upward, downward, left, or right. The top-left graph matches this description: it is a single, smooth U-shaped curve, while the others are either decreasing only, split curves, or exponential-style curves that do not have the symmetric, U-form of a parabola.

Answer:

The top-left graph (the single U-shaped curve crossing the x-axis and extending upward/rightward) is a parabola.