What role do negative keywords play in a AI-powered Search strategy?

Negative keywords are crucial for refining an AI-powered Search strategy by preventing your ads from showing for irrelevant searches. They ensure that even if a query broadly matches your keywords, the ad won't display if it contains a negative keyword, thus avoiding wasted ad spend and improving ad relevance. For example, if you sell "men's shoes" but not "used men's shoes," adding "used" as a negative keyword prevents your ad from appearing for that irrelevant search. The other options are incorrect because negative keywords do not identify new search terms, affect customer reviews, or limit competitor bidding.