The five musicians

Since all musicians play different instruments, we can deduct from the above statement that Jason, Zoe, and Simon don’t play the flute.

2. “The clarinet player enjoys spending time with Jason, Simon and Dave, but he really dislikes the oboe player.”

Neither Jason, Simon nor Dave play the clarinet or the oboe, which means that the clarinet and the oboe players are Helena and Zoe. Thus, statement A is false.

3. From the above we can deduct that Dave plays the flute, since all other options have been eliminated. Thus, statement C is also false.

4. “Simon and Zoe are very close with the violinist”

We already knew that Zoe didn’t play the violin, but now we also know that Simon doesn’t play it either. That only leaves Jason as the possible violinist, thus Simon is a percussionist. Statement B is then true.

5. “but Helena and the oboe player can’t stand each other.”

This means Helena doesn’t play the oboe, so the only option left is the clarinet. Thus, Zoe plays the oboe and statement D is false.

The only correct statement is B.