Explanation: If Jack and Olivia sit next to each other, the possible other person next to Jack is Lee or Kimberly (from Q62). Lee cannot sit next to both Kimberly and Nick because K and N are required to be next to each other (Cond 3). If K and N sit together (K-N) and Lee sits next to both of them, the arrangement would be K-N-L-K, which is impossible. Thus, Lee CANNOT sit next to both **Kimberly and Nick**.
