What is the correct spacing after a comma?

The correct spacing after a comma is one space. This standard aligns with modern typing practices and style guides used in professional and academic writing. The purpose of inserting a single space after a comma is to enhance readability and maintain a clean and consistent appearance in text. When you apply one space after a comma, it allows for a clear separation between ideas or items in a list, improving the flow of reading without cluttering the text with excessive spacing.

In contrast, other options such as no space or multiple spaces would lead to a compact and possibly confusing presentation, making it harder for readers to process the information effectively. Consistently using one space after commas helps establish a uniform approach to punctuation that contributes to better written communication.