Answer:
the distribution of audio or video files to personal computers or mobile devices such as smartphones
Step-by-step explanation:
The correct answer is missing from the options and mentioned above.
Podcasting is the preparation and delivery of RSS-based audio files to registered users ' computers. Podcasting often uses a subscription model that automatically downloads new episodes to a user's own local computer, mobile app, or portable media player. Content producers are increasingly turning to podcasting because cheap and user-friendly.