Answer:
D. They provide a sense of atmosphere and context for the news.
Explanation:
Generally, ambient background sound includes the sounds which are present in a scene or location, including the sounds of wind, water, birds, crowds, office noises, traffic, etc. Ambient sound is very important in video and film production as they create the required atmosphere and context. A setting with ambient background sound causes the audience to relive an event and get a sense of what really happened from the story. It brings the past into the present.
