Angle 3 and 4 are complementary angles as their sum is 180 degrees. Option B is correct.
What is the complementary angle?
When two angles' measurements add up to 90 degrees, they are said to be complimentary. When two angles' measures sum up to 180 degrees, they are said to be supplementary.
In the given figure we can see that the segment s is cutting the segment l at some point so angle 3 and angle 4 are forming the complementary angles. It means that the sum of the angles will be 180.
Therefore, angles 3 and 4 are complementary angles as their sum is 180 degrees. Option B is correct.
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