Answer:
A. ASA Congruence Postulate
Explanation:
We have marked that ∠BAE and ∠CDE are congruent. We also have marked that AE and ED are congruent.
∠AEB and ∠CED are also congruent; this is because they are vertical angles. Vertical angles are opposite angles that share only a vertex; these are vertical angles and thus are congruent.
This gives us two angles and an included side; this gives us ASA.