1. **State the problem:** We have four friends: Beka, Nissa, Rona, and Pasha, each hiding in a different spot: trees, fountain, bench, and lamppost. 2. **Given conditions:** (a) Beka or Nissa is behind the trees. (b) Rona or Pasha is behind the fountain. (c) Beka or Nissa is behind the bench. (d) Rona or Beka is behind the lamppost. 3. **Analyze the conditions:** - From (a) and (c), Beka or Nissa occupy both the trees and the bench. - From (b) and (d), Rona or Pasha is behind the fountain, and Rona or Beka is behind the lamppost. 4. **Since Beka or Nissa are at trees and bench, Beka cannot be at lamppost (because Beka is already at trees or bench).** 5. **From (d), since Beka is not at lamppost, Rona must be at lamppost.** 6. **Therefore, Rona is hiding behind the lamppost.** **Final answer:** D) The lamppost