Which of the following line spacing is invalid?

Solution (By Examveda Team)

Understanding Line Spacing: Line spacing refers to the vertical space between lines of text in a document.

Common Line Spacing Options:
Several standard options are available for line spacing to improve readability.

Explanation of Options:
Option A: Single - This is a valid and common line spacing option. It uses the default spacing defined by the font.
Option B: Double - This is also a valid and commonly used option. It provides twice the space of single spacing, enhancing readability, especially for longer texts.
Option C: Triple - While more unusual, triple spacing *could* be implemented in some software, but it isn't a standard, universally recognized option in typical word processing programs. It is often not a directly selectable option.
Option D: Multiple - This is a valid option that allows you to specify a line spacing as a multiple of the single line spacing (e.g., 1.5, 2.5).

Why Triple is Invalid:
The term "triple" as a *direct* line spacing option isn't a standard setting found in most word processors.
You achieve similar results by using the "Multiple" option and setting the value to 3, but "triple" itself isn't typically a pre-defined choice.

Therefore, the correct answer is C: triple.