The correct option is A 3 cm
The intercept theorem states that if there are three or more parallel lines and the intercepts made by them on one transversal are equal, then the intercepts made by them on any other transversal are also equal.
It is given that j||k||l.
Also, XY=YZ
Now, r and p are transversal.
Thus, using the intercept theorem, we have, TU=UV=3 cm.
So, the correct answer is option (a).