User history

A search engine collects the following search records for a user:

Query	User ID	Date	URL
"board games"	XE3AL08	01/07/20	boardgamegeek.com
"seafood recipes"	XE3AL08	02/23/20	www.seafoodwatch.org/consumers/sustainable-recipes
"news without ads"	XE3AL08	02/27/20	npr.org

Each record contains four pieces of information:

In what way could the search engine personalize future search results based on this history?

👁️Note that there are 2 answers to this question.

(Choice A)
The search engine could show an advertisement next to the search results for "Terra Mystica", a strategy board game.
(Choice B)
The search engine could give higher ranking to search results that are more popular with the user's age group.
(Choice C)
If the search results includes news articles, the search engine could give higher ranking to articles from the news site NPR.
(Choice D)
When the user searches for restaurants, the search engine could show results that are only in their local area.

Computers and the Internet