Answer:
The answer to this question is given in the explanation section. The correct option is long tail
Explanation:
a.Folksonomy
Folksonomy is a way of organizing data and digital content. With Web 2.0, users can collaboratively manage and tag photos, journals and other media. As more users do this, creates a system of classification for the media and information. so this option is not correct
b. long tail (correct option)
Some sites are able to offer services as well in which users can subscribe monthly or pay a fee every so often. An example of this would be Netflix.
c.user participation
All users have the free will to contribute to the site which makes many Web 2.0 pages public. With sites such as Wikipedia, anyone is open to the editing of articles. Information is provided two-way instead of solely from the site owner.
d.application
Web 2.0 applications that allow anyone to create and share online information or material they have created. As you know that there are number of different types of web 2.0 applications including wikis, blogs, social networking, folksonomies, podcasting & content hosting services.
The web 2.0 features that allows users to subscribe to a data plan is b. long tail
Web 2.0 enables internet users to develop and share contents they have created on web pages.
Long tail enables users to subscribe to a data plan before they can have access to contents online which means that a user with no data plan cannot access those contents.
This Users will then be charged based on the length of time they spent in browsing or streaming movies.
Example a user that need to watch or stream movies on Netflix will need to have enough data or data subscription as the users will be charge based on the time spent streaming the movies on the internet.
Inconclusion The web 2.0 features that allows users to subscribe to a data plan is b. long tail
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