ANSWER
Line segments AB and DE are congruent.
Step-by-step explanation
We are given that triangles ABC and DEF are congruent.
When two triangles are congruent, the corresponding sides and angles are congruent.
This means that:
![\begin{gathered} and[tex]\begin{gathered} AB=DE \\ BC=EF \\ AC=DF \end{gathered}]()
Therefore, the only correct option is that line segments AB and DE are congruent.