Suppose that a computer virus infects your computer and corrupts the files you were going to submit for your current homework assignment. What precaution could have saved you from a disastrously bad grade for this assignment?

The answer is "Create all your important file backup regularly".

Explanation:

Data recovery is just the outcome of your files and folders becoming preserved or saved until they can be recovered in the event of data loss. It can occur from many issues from malware through file manipulation, authentication, or theft.

yes we can change both the color of the value of a cell as well as background color of a cell at the same time .

as we know that excel sheet consists of columns and rows.

and intersection of column and row is called cell.

we can change color of the cell and background of the cell at the same time.

hence the statement that

can a person change color of the cell and background of the cell at the same time is true.

answer///radio frequency interference (rfi);