Answer:
Basically, anything quantity that is not defined as one of the 7 base quantities is a derived quantity by definition. Pressure is not one of the 7 base quantities. Hence it is a derived quantity.
The answer & explanation for this question is given in the attachment below.
Answer:
(d) all of the above
Explanation:
This is because, not only is digital video a core technology for digital television, it also happens to be a core technology for video conferencing and video messaging. This could be seen in its application in messaging apps for private discussion of for holding official meetings between employees in virtual conference.