Answer:
Option D is correct choice.
Explanation:
We are told that o is circumscribed about quadrilateral ABCD and we are asked to find out the value of x.
Since we know that If a quadrilateral is inscribed in a circle then opposite angles of quadrilateral are supplementary.
Now we will set an equation of the given information as:



Therefore, x equals to 36 degrees and option D is the correct choice.