A guideline that defines how the data in a database is processed is known as what a. Business rule
b. Object
c. Requirement
d. Data dictionary

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.

i would say d or b in my opinion because the other don't make sense but i i had to pick i would say d

explanation: