The core of this question revolves around the importance of the legal system knowledge for journalists, as highlighted in the provided text. The text emphasizes that the legal system and its events are primary subjects for journalists, suggesting that understanding it is crucial for their reporting. Option A directly aligns with this by stating that such knowledge enhances the accuracy of political reporting, which is a synthesis of the text's emphasis on both political and legal reporting. Option B, while plausible, focuses more on the avoidance of legal issues rather than the enhancement of reporting quality. Option C is incorrect because predicting legal outcomes is beyond the scope of journalistic responsibilities. Option D misrepresents the role of journalists by suggesting they engage in legal advocacy, which is not their primary function. Therefore, the correct answer is A, as it best reflects the importance of understanding the legal system for enhancing the quality of journalistic reporting on political stories.