QUESTION $39$

The term "content adjacency" refers to:

$q,$ placing advertisements to reach consumers based on various traits such as demographics and purchase $q,$ a technique used by online publishers to increase the effectiveness of their campaigns. advertisements that are targeted based on a user's query. $q,$ a concern that an advertisement will run near offensive material, embarrassing an advertiser and$/$or deg problems associated with advertisements that run before a user arrives at the home page of a website.