Answer:
B. Congruent SSS.
Explanation:
We are given triangles ABC and DEF.
Also we are given statements
Side AB is congruent to side DE that is AB≅DE
Side BC is congruent to side EF that is BC≅EF
Side CA is congruent to side FD that is CA≅FD
We can see all three sides of the triangles are congruent.
Therefore, triangles are congruent by Side Side Side concurrency postulate.
So, the correct option is :
B. Congruent SSS.