Answer:
Step-by-step explanation:
The arc defining one part of the circle + the arc vertically opposite the given arc when added must be divided by 2. That's the value of angle at the intersection.
In this case, (arc BD + arcEC)/2 = < EFC
Arc bd = 69
Arc CE = 67
<EFC = (69 + 67)/2 = 68
So the answer is number 4
