Which rule prohibits a lawyer from having an interest in the outcome of a legal matter?

The correct answer relates to the fact that Rule 1.8 specifically addresses a lawyer's conduct regarding conflicts of interest in various scenarios. This rule delineates the parameters within which lawyers can operate without compromising their professional judgment. Particularly, it prohibits a lawyer from acquiring a financial interest in the outcome of a case they are working on for a client, as doing so could interfere with their duty to represent the client's best interests. Such an interest could lead to a divided loyalty, where the lawyer's personal financial stake could conflict with their obligation to advocate solely for the client's needs.

Understanding this rule is essential, as it reinforces the fundamental principle that a lawyer's primary responsibility is to the client, ensuring that their advice and actions are not influenced by personal gain or interests. This distinction is crucial in maintaining the integrity of the legal profession and upholding clients' trust in their legal representatives.