You're setting up keyword insertion for your Search campaign to promote a new line of eco-friendly shirts so that the ad text dynamically adjusts to match queries like “V-neck shirts" and “crew neck shirts." If the keyword can't be replaced, however, you want the ad to serve the default phrase “eco-friendly shirts.” How should you set up this keyword insertion in Google Ads?

The correct format for keyword insertion with a default phrase is {keyword:Default Text}. This means that if the keyword cannot be inserted (e.g., it's too long, contains special characters, or is irrelevant to the landing page), the ad will display "eco-friendly shirts" instead. The other options are incorrect because they either misplace the default text, include additional text within the curly braces that isn't part of the default, or attempt to insert multiple keywords or descriptive phrases in a way that Google Ads' dynamic keyword insertion doesn't support for the default text. The default text must be a single, complete phrase that can stand alone if the keyword insertion fails.