When reviewing a Reach Planner forecast, which metric indicates the estimated number of unique people within the defined target demographic and location that the plan is expected to reach?

On-target reach is the correct metric because it specifically measures the estimated number of unique individuals within your defined target audience (demographic and location) that your media plan is projected to reach. This metric is crucial for understanding the effectiveness of your plan in connecting with the intended audience. Target rating point (TRP) measures the gross rating points delivered to a specific target audience, but it doesn't represent unique individuals. Average frequency indicates how many times, on average, a unique user is expected to see your ad, not the number of unique users reached. Conversion rate measures the percentage of users who complete a desired action after seeing an ad, which is a post-impression metric, not a reach forecast.