Segment
Explanations:An arc is a section of the _ of a circle or any curve.
The right answer to fill that gap is segment.
Normally, an arc is the segment of a curve. An example of a curve is a circle
The arc is classified based on its relationship with the circumference of the circle
A minor arc has a length that is less than a half circumference of a circle
A semicircle has a length that is equal to a half of the cirxumference of a circle
A major arc has a length that is greater than the half of the circumference of a circle
