If triangles ABC and XYZ are similar, what is the length of side x? Please help, this is the last question and I can't get it

Im literally having a mental breakdown

If two angles of a triangle have equal measures and the third angle measures 90°, what are the angle measures of the triangle? a. 60°, 60°, 60° b. 45°, 90°, 90° c. 30°, 30°, 90° d. 45°, 45°, 90°

Sam is picking fruit from a basket that contains many different kinds of fruit. which set of events is independent?