Final answer:
△ ABC and △ DEF satisfy the AAA correspondence. △ ABC and △ DEF may or may not be congruent, but it is not a criterion for them to always be congruent. So the correct answer is C. may or may not be congruent.
Step-by-step explanation:
The AAA correspondence is a postulate in the study of triangles. According to this postulate, if two triangles have corresponding angles that are congruent, then the triangles themselves are congruent.
Therefore, if △ ABC and △ DEF satisfy the AAA correspondence, it means that they have three corresponding angles that are congruent. In this case, △ ABC and △ DEF may or may not be congruent, but it is not a criterion for them to always be congruent.
So the correct answer is C. may or may not be congruent.