Explanation:

- The sentences highlight the contrast between journalistic ideals and practical behaviors of media houses.

- Using "Even though," "Yet," and "But" appropriately connects the sentences as they indicate contrast:

- I. Even though: Suggests that despite the importance of journalistic freedom, some media houses focus on TRP.

- II. Yet: Implies a contrasting idea between journalistic standards and some media behaviors.

- III. But: Similarly connects contrasting thoughts.

- IV. Because: This shows causation and does not fit well, as it would suggest media houses publicize such news due to journalistic freedom.

Option 4: Only I, II and III