Answer:
D
Step-by-step explanation:
Since the line segment inside the triangle is parallel to the side of the triangle and intersects 2 sides then it divides those sides in proportion, that is
[tex]\frac{63}{45}[/tex] = [tex]\frac{x}{55}[/tex] ( cross- multiply )
45x = 3465 ( divide both sides by 45 )
x = 77 → D
