Answer:
b. SSS
Explanation:
The diagram provided shows that:
DE is congruent to DG,
EF is congruent to FG, and
DF is congruent to DF
Thus, all three sides of ∆DEF is congruent to all corresponding sides of ∆DFG. Therefore, by the Side-Side-Side Congruence Theorem, ΔDEF ≅ΔDFG.