The correct answer is: A. The space between the lines of text.
Line spacing is the distance between the baselines of two consecutive lines of text. It is usually measured in points, with one point equal to 1/72 of an inch. The default line spacing in most word processing programs is 1.0, which means that there is one point of space between each line of text. However, you can change the line spacing to any value you want. For example, you might want to use a larger line spacing for a document that will be printed out, or a smaller line spacing for a document that will be read on a screen.
The height of a line of text is the distance from the baseline of the line to the top of the line. The length of a line of text is the distance from the left margin to the right margin of the line.
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