The correct option is
A Red rope
Say:
There are a few colorful ropes on the screen.
We have to find the rope which is longer than the blue rope but shorter than the green rope.
Steps:
Let us first arrange the ropes in order of their lengths on the whiteboard.
Let us now find the ropes that are longer than the blue rope.
Yellow, red, green, and brown ropes are longer than the blue one.
Now, let us find the rope that is shorter than the green rope.
Red and black ropes are shorter than the green rope.
Thus, the rope that is longer than the blue rope but shorter than the green rope is the red rope.
Hence, Option B is the correct answer.
Probing Q: If we keep all the ropes in a way that their ends are in the same line, then we can say they are of equal lengths. Am I correct?
A: No! To compare lengths of different objects, their starting point has to be in the same straight line.