2 were released as part 5 for the Sims 3 Expansion Pack Series. These two packs were the Pets Expansion and the Master Suite pack which added buyable and ownable pets and hotels.
The answer is definitely C: Blogs.
Blog is somewhat very similar to a website. It is sort of a journal that is mostly maintained by one person, the blogger. They are updated regularly and can contain information related to a specific topic. In most cases, blogs are used as dairy diaries about politics, people’s personal lives, or social commentaries. They give you, as a blogger, opportunities to interact with your visitors while promoting your products.