If the user forgets to fill out a portion of a form, it is an easy task for JavaScript to detect the absence of required data and alert the user accordingly.

________ are squares surrounding a selected object that can be used to adjust its size

Fill in the blank(s) with correct word

A laser printer has just had a new cartridge installed, but the output still appears light (almost blank). A second new cartridge produces the same result. What is the most likely problem?

A) The new ink cartridge is faulty. B) The scanner unit that contains the laser is faulty. C) The transfer corona is faulty. D) The fuser unit is faulty.