Question

which figure shows a major arc?

Explanation:

A major arc is an arc of a circle that is longer than a semicircle (covers more than half the circumference of the circle). The first figure shows a chord, not an arc. The second figure shows a minor arc (shorter than a semicircle). The third figure shows an arc that spans more than half the circle, fitting the definition of a major arc. The fourth figure shows a central angle with the corresponding minor arc.

Answer:

The third figure (bottom-left among the arc figures, the one with the long curved green segment covering most of the circle)