Which term best describes a muckraker

Since there are no options left, you could call them "irresponsible journalists"

Amuckraker was a journalist during the early twentieth century who are widely considered as the first investigative journalists. they were called muckrakers because of their penchant to “rake up” stories that are typically not glamorous, or “muck”.

Bis correct according to edgnuity , thaaanks