Answer:
D. <Y ≅ <B
Step-by-step explanation:
Acvording to the ASA congruence theorem, two triangles are congruent to each other if two angles and an included side of one triangle are equal to the corresponding two angles and included side of the other.
Thus, we are given that <Z ≅ <C, and side CB ≅ ZY.
To prove that both triangles are congruent, the additional information we would need is the corresponding angles of both triangles that will make each of their side lengths to be an included side.
Therefore the information that would be needed is:
<Y ≅ <B
