What additional information is required for the 2 triangles to be congruent by sas?

B and C would be necessary.

The cool thing about triangle congruency postulates is that their names are in coordination with how they work.

Take, in this case, SAS. Since the A is in between two S's, you can infer that an angle has to be between two sides.

For ASA, the S is in between the two A's, and so you can infer that there has to be a side between two angles.

In this scenario, you have to utilize Options B and C in order to ensure an SAS.

If you have any questions, just ask :)
-T.B.