The three primary benefits of Reach Planner are reliable unique reach forecasts, media mix options, and fresh data.

• It provides trustworthy unique reach forecasts, media mix options, and automation recommendations.
• It provides trustworthy popular reach forecasts, media mix options, and fresh data.
• It provides trustworthy popular reach forecasts, media mix options, and automation recommendations.
• It provides trustworthy unique reach forecasts, media mix options, and fresh data.

The correct answer is: It provides trustworthy unique reach forecasts, media mix options, and fresh data.

Explanation: The three primary benefits of Reach Planner are trustworthy unique reach forecasts, media mix options, and fresh data. It uses Google’s Unique Reach methodology, which is verified by several methods such as market research and global panels. The forecasts include calculations such as GRP, TRP, and CPP to help with planning. Reach Planner provides a forecast based on the desired audience, budget, geographic location, and ad formats, modeling trends and historical campaign performance. The data used is up to 92 days recent to capture recent trends, and seasonal changes may be reflected in the forecast for auction ad formats.