What is the long bar at the top of each window?

A convenient way to share files with other users is to place the files in the ________

Fill in the blank(s) with correct word

When multiple worksheets are grouped, inserting a row ________

A) inserts it into all of the worksheets in the group B) inserts it only into the first worksheet in the group C) displays an error message D) fails to insert a row into any of the worksheets in the group