An MP3 player is an example of which of the following types of computer operating systems?
A. Real-time OS
B. Multi-user, multi-tasking
C. Single-user, single-tasking
D. Multi-user

B) multi user -multi tasking

solution:

the right option is a

to adding   a new row to a table we   have to do process last table cell and pressing tab.

this is the process to add new row in the cell:

* to add a row below the cell, click insert below in the rows and columns group.

thus this is the required right answer.