In civil proceedings, the plaintiff must prove its case on a balance of probabilities, meaning the evidence must show it is more probable than not that the plaintiff's version is correct. Where the probabilities are evenly balanced, the plaintiff has not discharged the burden of proof and the claim must fail. The preponderance of probabilities requires an evaluation and assessment of the likelihood of the plaintiff's version being correct as opposed to the defendant's, based on the pleadings, documentary evidence, witness testimony, and the law. Assistance by a defendant in investigating a loss does not, without more, constitute acceptance of liability. A party seeking to hold another liable under a contract must prove that the contract was operative and that the defendant acted in breach of it.