Answer:
Letter D is correct. Similar Audiences for Search.
Step-by-step explanation:
Similar audiences for search is the best solution for finding new consumers. This search tool uses remarketing lists so you can find new customers with characteristics similar to your current customers. A widely used tool for this purpose is Google Ads which classifies original lists with new ones according to similarities and defines them in the same interest categories.
So this is a solution widely used by companies that want to reach larger audiences and increase the reach of their products and services.