Final answer:
The correct reasoning for the similarity between triangles AABC and AEDC cannot be determined from the given information.
Step-by-step explanation:
To determine the correct reasoning for the similarity between triangles AABC and AEDC, we need to examine the given information.
Unfortunately, the provided excerpts do not directly provide the necessary information to determine the specific reasoning for the similarity.
Therefore, the correct answer is option D) Not determinable from the given information.