____ is the difference between the darkest and lightest areas of an image.

Case 9-2 Rafael has been staring at his tourism project for a long time. He is pleased with what he has produced but something-he is not quite sure what-is still missing. Then in a flash, it occurs to him: he needs to add an image of a group of vacationers having fun to the page. If Rafael is creating a Windows application, what kind of object will he use to display the picture of the vacationers?

A. Visual B. Graphic C. PictureBox D. Image

What is "Fill From History" and how does it work?  Give one example of how you might use the History panel in this way.

What will be an ideal response?