Answer: OPTION C.
Step-by-step explanation:
You can observe in the picture given in the exercise that is formed by two secants intersecting outside the circle.
It is necessary to remember that, by definition:
You can also identify that the Intercepted Arcs are the following:
Then, knowing the measures of the Intercepted Arcs, you can substitute them into the equation shown before and then evaluate, in order to calculate the measure of , which is the angle formed by the intersection of the secants.
Therefore, you get: