Which of the following best describes the value of brand halo metrics?

Allows advertisers to better measure the number of impressions served on a promoted ASIN.
Allows advertisers to measure sales of their brand’s products off Amazon.
Allows advertisers to track additional sales or conversion metrics for related products under the advertised brand that were not promoted in the ads.
Allows advertisers to track additional sales or conversion metrics for products from brands unrelated to their own.

The correct answer is:

Allows advertisers to track additional sales or conversion metrics for related products under the advertised brand that were not promoted in the ads.