Audio And Video Tag In HTML

Which of the following is required to create an HTML Document?

________are a type of inexpensive digital camera that remains tethered to a computer and used for video conferencing, video chatting and live web broadcast.

Audio in television signals are

7 audio cassettes and 3 video cassettes cost Rs.1110, while 5 audio cassettes and 4 video cassettes cost Rs.1350. Find the cost of an audio cassette and a video cassette.

__________implies a combination of audio, video, text, animation and graphics.