To validate the extended list of CSS color names, you may need to select the More Options feature and select CSS3 as the Profile option.

Match each of the following computer generations to the type of electrical component used:

I. first-generation II. second-generation III. third-generation IV. fourth-generation A. transistors B. integrated circuits C. microprocessors D. vacuum tubes

The string-concatenation operator is represented by the ________ character.

a) $ b) - c) % d) +