Which of the following terms is used to refer to media outlets that utilize sensationalized headlines and stories to garner interest? (points : 3) entertainment news hard news tabloid journalism all of the above

The answer you're looking for is "tabloid journalism."  Entertainment news outlets practice their share of tabloid journalism, but tabloid journalism is the general term that applies regardless of what sort of stories are being reported.  A "tabloid" looks like a newspaper but doesn't report hard news as its main focus, and doesn't use the objective methods of a more reputable newspaper.  Nowadays, the tabloid approach is used for all sorts of Internet-based news outlets as well.  They try to lure you to their stories with "click bait" -- sensational headlines that will get you to click to read more.  Don't be so quick to bite on click bait.  Better to be a serious reader of serious news and to investigate your sources well to determine how factually and reliably they report on events.

(d) it was complex and capable of highly organized efforts.