When a news organization focuses on the Americans who died in a bombing rather than on the group that caused the bombing, it engages inA....

The correct answer here is to say that the media is engaging in framing when it focuses on the American victims of a terror attack rather than on the group that carried out the attack.  It would, incidentally, be framing as well if the media focused on the terror group.  That is because framing is simply the process of determining what gets reported and how it is presented.  Framing determines what will be presented as the important aspect of the story.

In this case, the media is framing the story as a story that is about the American victims of the attack.  It is telling us that they are the most important part of the story.  We are encouraged to think about them rather than about the group that did it, their motivations, or the geopolitical implications of the attack.  Framing, then, is the correct answer here.