Answer:
Option B. is the answer.
Step-by-step explanation:
As we know if sum of two angles at a point on a straight line is 180° and the angles are supplementary angles.
Option A. ∠DGB + ∠EGA ≠ 180°
angles are not supplementary.
Option B. ∠DGB + ∠CGB = 180° [ angles on a straight line CD at point D}
angles are supplementary.
Option C. ∠CGB + ∠AGD ≠ 180°
Therefore, angles are not supplementary.
Option D. ∠EGA + ∠EGC ≠ 180°
angles are not supplementary.
Option E. ∠EGD + ∠CGB ≠ 180°
angles are not supplementary.
