Answer: The answer is (D)

Step-by-step explanation: We are given a figure where the line segments AE and RV are intersecting at the point N. We are to find the measure of

Also, given that

Since the line segments AE and RV intersect at N, so we have
![\angle ANR=\angleENV~[\textup{vertically opposite angles}]\\\\5x+57=8x+12\\\\\Rightarrow8x-5x=57-12\\\\\Rightarrow3x=45\\\\\Rightarrow x=15.](https://img.qammunity.org/2018/formulas/mathematics/high-school/mjcq2j45f8gobkc6itny0r27ysas2bqv0q.png)
Therefore,

Thus, (D) is the correct option.