Final answer:
Third-party litigation funding in California requires consent from the litigant and a determination of reasonable expenses.
Step-by-step explanation:
In the context of litigation expenses, a concept known as 'third-party litigation funding' exists. It allows a third party to provide financial assistance to a party involved in a lawsuit. In California, the rules regarding third-party payment of litigation expenses require both consent from the litigant and a determination of reasonable expenses. This means that, with the agreement of the party involved in the lawsuit and the court's assessment of what is reasonable, a third party could potentially pay for some of the litigation expenses.