Which figure is bounded by a chord and an arc of a circle?

The correct answer is a segment. In geometry, a segment of a circle is defined specifically as the region that is enclosed by a chord and the corresponding arc of the circle. The chord acts as a straight line that connects two points on the circumference of the circle, while the arc is the curved portion of the circle that lies between those two points.

In contrast, a sector of a circle refers to the area enclosed by two radii and the arc between them, not by a chord. A curve, while a broader term that can include arcs and parts of circles, does not specifically refer to the defined area created by a chord and arc. A polygon, made up of straight line segments, does not involve circular arcs at all. Hence, the segment is the specific term that accurately describes the figure formed by a chord and an arc within a circle.