How does an advertiser benefit from using Google Surveys?

Google Surveys can see what people are searching for and find related topics.
Google Surveys can validate the advertiser’s idea through the world’s largest focus group.
Google Surveys can discover the top questions the advertiser’s target audience is
Google Surveys can plan an ad campaign by trendspotting and nowcasting.

The correct answer is:

Google Surveys can validate the advertiser’s idea through the world’s largest focus group.