Does a plaintiff have to abandon contentions of error regarding the dismissal of a cause of action by failing to raise or address the contentions in their appeal?

abandon contentions of error regarding the dismissal of a cause of action by failing to raise or address the contentions in their briefs on appeal"].) We therefore need not address her argument that the court erred in finding this cause of action time-barred. (See, e.g., Excelsior College v. Board of Registered Nursing (2006) 136 Cal.App.4th 1218, 1237, fn. 3 ["Since we uphold the trial court's ruling on the first basis for demurrer, we need not address this second argument"].)