Reach Optimization must be enabled to see forecasted results for both reach and frequency.

The selected answer,"True,"is correct because Reach Optimization indeed must be enabled to forecast results for both reach and frequency.Reach Optimization is a feature offered by advertising platforms like Linked In that allows advertisers to maximize the number of unique users who see their ads within a given budget.By enabling Reach Optimization,advertisers instruct the platform to prioritize reaching as many unique users as possible while staying within the specified budget.WhenReach Optimization is activated,the platform's algorithms work to efficiently allocate the budget to maximize ad reach.Additionally,Reach Optimization helps to control the frequency of ad impressions shown to individual users,preventing overexposure and ensuring that the ad reaches a diverse audience.By forecasting results for both reach and frequency,advertisers can make more informed decisions about their ad campaigns,including budget allocation and targeting strategies.Therefore,to access forecasted results for both reach and frequency,Reach Optimization must be enabled,making the statement"True."