Designers generally use . . . . . . . . colour for the background, and . . . . . . . . for the text.

The correct answer is: B. White, black

White is a light color that is often used as a background color because it is easy to see text on. Black is a dark color that is often used for text because it is easy to read.

Option A is incorrect because blue and pink are both light colors. Light colors can be difficult to read text on, so they are not typically used as background colors.

Option C is incorrect because black and white are both dark colors. Dark colors can be difficult to read text on, so they are not typically used as text colors.

Option D is incorrect because pink and blue are both light colors. Light colors can be difficult to read text on, so they are not typically used as background colors.