Answer:
D. They provide an interactive interface.
Step-by-step explanation:
Multimedia is a computer based system that supports more than a single type of media usually text, image, animation, audio and video.
The characteristics of the multimedia system are;
1. Multimedia system must be computer controlled
2. All multimedia components are integrated.
3. The interface to the final user may permit interactivity.
4. Information must be represented digitally.