describe the adventages and disadventages of a supermarket using a bar code reader and an RFID reader.

answer; /// i believe the correct answer is (color filter);

answer is:

a). backstage view

explanation:

backstage view is the area where files and data about them is managed— creating, saving, printing, sending to others, inspecting for hidden metadata or personal information, and setting options. so in this way we can add many things to our document swiftly.

i hope you get the idea.