Answer:
b). In-market audiences.
Explanation:
In-market audiences is a type of audience targeting options.
In-market audiences is to select from these audiences to find customers who are in the market, which means that they're researching products and are actively considering buying a service or product like yours.
These audiences are designed for advertisers focused on getting conversions from likely buyers.
In-market audiences can help drive remarketing performance and reach consumers close to completing a purchase.