Answer:
A. SAS
Step-by-step explanation:
[tex] In\:\triangle ABM \:\&\:\triangle CBM\\
\overline{AB} \cong \overline{CB}.... (given) \\
\angle ABM \cong \angle CBM....(given) \\
\overline{BM} \cong \overline{BM}.... (common) \\
\therefore \triangle ABM \:\cong\:\triangle CBM..... (SAS\: Postulate) [/tex]
