Question

andrew sullivan, who live blogged the iranian uprising in 2009, is an example of the new generation of civilian journalists that make up _____.
wikipedia journalism
news aggregators
narrowcasting
millennial journalism

Explanation:

News aggregators are platforms or individuals that collect and present news from various sources. Andrew Sullivan's live - blogging of the Iranian uprising in 2009 fits the concept of a news aggregator as he was gathering and sharing information (in the form of a blog) which is a key aspect of news aggregation. Wikipedia journalism is more about collaborative knowledge building in an encyclopedia - like format. Narrowcasting is about targeting a specific audience segment with content. Millennial journalism is a more general and less defined term compared to the specific role of a news aggregator in this context.

Answer:

news aggregators