They determine which stories will receive public attention. Because the media has the power to focus the public's attention on a particular issue.
I’m pretty sure the answer is D :)
I think this could be a psychological phenomenon: people look for some symbols common to humanity, that would represent humanity as a whole.
The ancient Seven Wonders were a reminder of how far humanity has come and something that all the people who referred to them had a common: a wonder at how magnificent these structures were.
Ahmed may be suffering from simultanagnosia. This means he can only focus on one object at a time.