Answer: The correct option is
(B) ASA postulate.
Step-by-step explanation: We are given to name the postulate or theorem that we can use to prove that ΔSUR ≅ ΔTVR.
It is given that
∠SUT ≅ ∠SVT and UR ≅ VR.
From the given information, we have
In triangles SUR and TVR,
∠SUR ≅ ∠TVR
UR ≅ VR
and
∠URS ≅ ∠VRT [Vertically opposite angles]
Therefore, by ASA (angle-side-angle) postulate, we find that
ΔSUR ≅ ΔTVR.
Thus, ΔSUR ≅ ΔTVR by ASA postulate.
Option (B) is CORRECT.