The Side-Splitter Theorem states that if a line is parallel to one side of a triangle and intersects the other two sides, it divides those two sides proportionally.
As for the first option, it says that the intersecting line would always form a right angle, and this is false.
Regarding the second option, it mentions a perpendicular line to one side of the triangle rather than a parallel line.
The third option is exactly the Side-Splitter Theorem. The answer is the third option (top to bottom).