Correct option is D
Given:
Lines L1 and L2 are parallel
They are cut by a transversal
One of the corresponding angles = 75°
Required: Measure of the other corresponding angle.
Concept Used:
When two parallel lines are cut by a transversal, corresponding angles are equal.
Solution:

Given corresponding angle = 75°
Other corresponding angle = 75° (by the property of parallel lines)