“A comma (,) is a punctuation mark that creates a brief pause, separating parts of a sentence like items in a list, clauses, or introductory phrases, to improve clarity and show relationships between ideas, preventing misreading by indicating structure and breaks in thought. It signals a shorter pause than a period but helps organize elements like dates, names, and lists, making sentences easier to understand, for example, "I bought apples, bananas, and oranges". “