What else would need to be congruent to show that ABC DEF by AAS (Apex)

Answer: B. [tex]\angle{C}=\angle{F}[/tex]
Step-by-step explanation:
In the given picture, we have two triangles having one side and one angle equal .
To prove the given triangles congruent by AAS theorem we need one more pair of angles congruent .
We can take option A.
[tex]\angle{A}=\angle{D}[/tex] but then the triangles wuill become conruent by ASA postulate not AAS.
Therefore, we need [tex]\angle{C}=\angle{F}[/tex] to prove the given triangles congruent by AAS theorem.