Ok i am from k-12(the homeschool website) and i saw "star points" when i see a test/quiz so what do they do?

They are your mastery of that subject in that type of quiz.

your answer is confidentiality

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.