The RGB channel is called the ____channel because it is the result of combining the R, G, and B channels.

A _____ line under a heading indicates subordinate text that is not displayed.

A. green B. blue C. gray D. red

A tag is a keyword that you might assign to describe ____ to make them easier to find at a later time.

A. e-mail messages B. blog posts C. Web pages D. pictures