Answer:
C
Step-by-step explanation:
∠ BHC = ∠ FAB = 48° ( alternate angles )
The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.
∠ ABC is an exterior angle of the triangle, thus
∠ ABC = ∠ BHC + ∠ ECB = 48° + 18° = 66° → C
