Step-by-step explanation:
[tex]y = 180 \degree - 116 \degree = 64 \degree \\ \\ x = 360 \degree - (125 \degree + 72 \degree + 64 \degree) \\ = 360 \degree -261 \degree \\ = 99\degree \\ \\ \huge \red{ \boxed{\therefore \: x = 99\degree }}\\ \\ [/tex]
Thus, option C is the correct answer.
