Which of the following requires that all parties in the conflict must give up something?

Barrier is not a conflict resolution technique; it describes an obstacle that prevents resolution rather than a method for achieving it.

Problem solving (confronting) is a collaborative win-win approach where parties jointly search for the best solution, so neither side is required to give something up.

Withdrawal (avoiding) means one or both parties retreat from the conflict rather than actively negotiating, so no exchange or concession occurs.

Compromising, sometimes called reconciling, is a give-and-take approach where each party sacrifices part of their position to achieve agreement. Because no single party gets everything they want, it is considered a partial-win for all sides rather than a full win for any. It is the technique specifically defined by the requirement that all parties give something up.