Your ad can show on the Google Search Network when someone searches for terms that are similar to your:
Correct Answer
Keywords
Why is this the correct answer?
Your ad can show on the Google Search Network when someone searches for terms that are similar to your keywords. Google's keyword matching technology allows ads to appear not just for exact keyword matches but for search queries that are semantically related, have the same meaning, or include close variants such as misspellings, synonyms, and related phrases. This ensures advertisers reach relevant searchers even when the exact keyword is not typed, broadening reach without requiring an exhaustive keyword list.
Why are the other options incorrect?
Placements
Placements are Display Network targeting settings that specify which websites to show ads on — they are not related to Search Network ad triggering based on search queries.
Website
Your website content is not directly used to match ads to search queries — keyword targeting, not website crawling, determines when Search ads are shown.
Ad text
Ad text can influence Quality Score and CTR but is not the trigger for when ads show — keywords are the matching mechanism on the Search Network.
Real-World Example
A dentist adds the keyword teeth whitening to their campaign. Their ad also shows for searches like tooth whitening, teeth bleaching, and white teeth treatment — similar terms Google recognises as closely related. This broader matching generates 35% more relevant impressions without the dentist having to manually add every variant.