It is easier to implement, back up, and recover keys in a select one: a. centralized infrastructure b. decentralized infrastructure c. hybrid infrastructure d. peer-to-peer infrastructure

Whats three fourths of 15(this is supposed to be in math but i clicked too fast)

How should you specify box sizes on a web page if you want the boxes to vary according to the font size of the text they contain? a. in pixels b. in inches c. as percentages d. in em units

You can apply several different worksheet themes from which tab?