Answer:
C.

Explanation:
We have been given an image of a triangle and we re asked to find the measure of angle C.
Angle sum property of triangles states that all angles of a triangle add up-to 180 degrees, so we can set an equation as:

Upon substituting the given measure of angle A and B in our equation we will get,




Therefore, the measure of angle C is 70 degrees and option C is the correct choice.