The correct answer is C. To generate sufficient whitespace between two lines of text
Step-by-step explanation:
Typography focuses on the arrangement of elements such a letters, words, lines, etc. that make a text to be clear and visually appropriate. In this context, leading refers to the space between lines, this means leading create more or less distance between lines a text, which can make the difference between a text being appealing to the reader or easy to read as a minimum whitespace between lines is necessary. Thus, the purpose or leading in typography is "to generate sufficient whitespace between two lines of text"