Answer:
is the correct answer.
Step-by-step explanation:
It is given that is the center of the circle and .
Also it is given that arc are <em>congruent </em>that means they make equal angles at the center . Let the angle be .
Also, we know that the total angle made at the center of the circle is .
The given circle of question figure is divided in 3 arcs, so sum of angles made by all of them at the center is .
Hence is the correct answer for this question.