The effect which the increase in online and social media had on public debate over media bias and the impact of media ownership and partisan news sites is:
This refers to the favoritism shown by the media by giving certain news greater precedence over others and this is an unethical practices.
With this in mind, we can see that with the increased popularity of the social media and how media makes use of them, we see that it has led to the increase in media bias.
Read more about media bias here:
https://brainly.com/question/9467162