Answer:
B. ∠EBC and ∠ABE
D. ∠CBE and ∠ABD
C. ∠ABD and ∠ABE
Supplementary Angles are angles that add up to 180°
In this specific shape, angles that equal 180° are the angles that go across the whole line, NOT the vertical angles, like your last question. So picture it like this: The only angles that are supplementary should go from:
Point D to E
Point A to C
Hopefully this helped you!