The question is an illustration of equivalent ratios and similar triangles.
The true option is: [tex]\frac{WU}{WV} = \frac{UR}{VS}[/tex]
From the diagram, we have:
[tex]WU = UR[/tex] ---- This is so because both lines are marked once
Also, we have:
[tex]WV = VS[/tex] ---- This is so because both lines are marked twice
Divide both equations
[tex]\frac{WU}{WV} = \frac{UR}{VS}[/tex]
Hence, the true option is: [tex]\frac{WU}{WV} = \frac{UR}{VS}[/tex]
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