Answer:
C. 84 and 96
Step-by-step explanation:
Supplementary angles are pairs of angles that add up to a total of 180 degrees.
35 + 155 = 190 so A is false
61 + 19 = 80 so B is false
84 + 96 = 180 so C is true
72 + 18 = 90 so D is false
thus C is the only pair that adds up to 180 degrees
