I can only solve this by deduction. i.e eliminate 3 choices. The one left has to be the right choice.

Choice 1) Eyeballing it already can tell it’s more than 90 degree.

Treating the  unmarked line as not straight.

Choice 2) and 4) are the same value, since Angle W has the same value as Angle Z. When they both plus angle Y, they will give the same value.  No two choices of the same value can be right in a multiple choice question.

We are left with choice 3. ####