Answer:
D. 93.5°
Step-by-step explanation:
The measure of c is half the sum of the arcs subtended by the chords that create angle c. Those arcs are 83° (on the right) and 2×52° = 104° (on the left). The average of these two arcs is ...
c = (83° +104°)/2 = 93.5° . . . . . matches choice D
