Answer:
A. SAS
Step-by-step explanation:
In the figure attached, the triangles are shown.
The Side Angle Side postulate (SAS) states that if two sides and the included angle of one triangle are congruent to two sides and the included angle of another triangle, then these two triangles are congruent.
In this case, the two sides of triangle ABC are AC and BC and the included angle is ∠C, which are congruent with sides BD and BC and the included angle ∠B from triangle BCD
