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

-publishing news journals aimed at the upper social classes in America


-producing weekly journals focused on world news


-engaging in a style of publishing called yellow journalism


-working with missionaries to spread Christianity in Africa

Verified Answer :

Joseph Pulitzer and William Randolph Hearst were well known pioneers of an engaging in a style of publishing called yellow journalism.

Answer:

3rd Option

Explanation:

engaging in a style of publishing called yellow journalism.