Question

△bac ~ △def
△bac ~ △edf
△bac ~ △dfe
△bac ~ △fed

Explanation:

Step1: Identify corresponding angles

In similar - triangles, corresponding angles are equal. From the figure, we can see that $\angle BAC$ corresponds to $\angle EDF$, $\angle ABC$ corresponds to $\angle DEF$, and $\angle ACB$ corresponds to $\angle DFE$.

Step2: Determine the correct similarity statement

The correct way to write the similarity of two triangles is to match the corresponding vertices. So, $\triangle BAC\sim\triangle EDF$.

Answer:

$\triangle BAC\sim\triangle EDF$