An ad extension, if present, will always serve. Select whether the previous statement is true or false.

Explanation: The statement is **false**. An ad extension, if present, will not always serve. While ad extensions enhance the visibility and relevance of ads by providing additional information or features to users, their appearance is influenced by various factors such as ad position, ad rank, and ad relevance. Ad extensions may not always serve if they are not expected to improve ad performance or if they do not meet the criteria set by the ad platform for serving extensions. Additionally, ad extensions may not be eligible to serve in certain ad formats or placements, further limiting their visibility. Therefore, the presence of an ad extension does not guarantee its display with the ad, making the statement false.