Final answer:
Karan's key responsibility as an assignment editor is to determine the priority of news stories needing coverage.
Step-by-step explanation:
Karan's key responsibility as an assignment editor will be to determine the priority of news stories needing coverage. This involves evaluating the importance and relevance of different news stories and deciding which ones should be assigned for further coverage. The assignment editor plays a crucial role in ensuring that the news organization focuses on the most newsworthy stories and allocates resources accordingly.
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