When parents register their children for school, they are given the opportunity to enroll their children in an experimental music program that researchers hope will improve overall learning. Which experimental design is used in this example?

Music

Explanation:

i don't know to be honest but you on your own

step-by-step explanation:

ignitia made me retarted fool im stoopid laugh like shi

explanation:

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.