In a letter, ________ prevents you from having to press Enter at the end of each line

What is the process of comparing data with a set of rules or values to determine if the data meets certain criteria?

A. concatenation B. validation C. digit checking D. integration

The size of the padding, border, and margin all increase the amount of space on a web page that an element occupies or influences. However, the dimensions of these properties are generally not included in the calculated width or height of an element.  Please explain how you calculate box size.

What will be an ideal response?