Under which condition can a civil case be settled out of court?

A civil case can be settled out of court primarily when all parties agree to negotiate. This willingness to engage in discussions provides an opportunity to find a mutually agreeable solution without the need for further court proceedings. Out-of-court settlements can save both time and resources for the parties involved, and are often facilitated through mechanisms like mediation or direct negotiation.

While the other choices touch on relevant aspects of civil procedures, they do not directly support the concept of an out-of-court settlement. For example, if one party refuses to negotiate, reaching a settlement becomes impossible. Similarly, if a case has already been partially tried, the opportunity for settlement may be limited by the court's involvement and timeline. Lastly, while having no disputed facts may lead to a straightforward resolution, it does not guarantee that all parties will agree to settle; the willingness to negotiate is the key condition for an effective out-of-court agreement.