This not a queston but a warning if you see a tnyInk link DO NOT DOWNLOAD THE FILE IN IT they most likley contain malware and if you see that link in a comment report it please it will help. and also show this to your freinds or someone.

Ya.. ive been telling everyone that... There doing it on every question its kinda annoying

i will say b. laboratory technician   and if wrong then sorry

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.