How does double-spacing affect the readability of a document?

Double-spacing improves readability by providing additional space between lines of text, which allows readers to track their place more easily as they move down the page. This increased spacing minimizes the risk of lines being skipped or misread, especially in longer paragraphs. For many readers, sufficient space between lines helps reduce eye strain and makes it easier to digest the information presented, making the overall experience of reading more comfortable and effective.

While the other choices might have some relevance in different contexts, they do not directly address the primary impact of double-spacing on readability. For example, while double-spacing might create a formal appearance, that is not its main purpose, nor does it influence how easily the content can be understood. Similarly, it does not reduce the overall length of a document, rather it can increase it by taking up more space on the page. Lastly, while double-spacing can aid in aligning text, its primary function and benefit relate to enhancing readability through improved line separation.