What does CS mean? idk

It means computer science.Which is the science that deals with the theory and methods of processing information in digital computers and the design of computer hardware and software.

answer; ///i believe that neither technician a or technician b are correct answer(both are false);

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.