Final answer:
CNN (option A) is recognized as a left-leaning media source when compared to other outlets such as Fox News, The Wall Street Journal, and Breitbart News, which are known for conservative biases.
Step-by-step explanation:
The question asks which of the listed options represents a left-leaning media source. Out of the options given, A) CNN is most commonly identified as leaning to the left, or liberal, in its coverage and presentation of news. The other outlets mentioned, such as B) Fox News, C) The Wall Street Journal, and D) Breitbart News, are typically recognized for having conservative biases to varying degrees.
CNN has been noted to maintain a more moderate perspective compared to MSNBC, which carries a more pronounced liberal bias. However, compared to Fox News, which has a strong conservative slant, and Breitbart News, which is also known for right-wing conservatism, CNN is seen as more aligned with liberal viewpoints. Media outlets often act as gatekeepers, shaping the information they present according to their editorial stances, a concept reflected in their coverage of news stories and political campaigns.