A recent survey by the Pew Research Center notes that the fastest-growing demographic for social networks today is the 60-and-older age group

With a radial gradient, the dotted circle represents the ____ of the gradient.

A. circumference B. length C. smallest part D. lightest color

As shown in the accompanying figure, the @page ____ has properties for page size and margins.

A. selector B. header C. index D. link