Question

What were Joseph Pulitzer and William Randolph Hearst well known pioneers of?

Answer 1

Joseph Pulitzer and William Randolph Hearst well known pioneers of engaging in a style of publishing called yellow journalism. The correct option among all the options that are given in the question is the third option. I hope that the answer has actually come to your great help. 

Answer 2

Option 3: Engaging in a style of publishing called yellow journalism.

The rivalry between the American Newspapers of William Randolph Hearst and Joseph Pulitzer, named New York Journal and New York World respectively, in the late 1800s, resulted in a journalism style called yellow journalism.

Their famous newspapers were characterized for having exaggerated and dishonest stories, sensational reporting, and for using shocking headlines that caught people's eyes, which later was known as "yellow journalism".