The correct option is YAML uses indentation and line breaks to represent structure while JSON defines structure with delimiters.

This statement is accurate because YAML relies on significant whitespace. Indentation and new lines convey nesting and list structure, so the layout of the file directly represents the data. JSON represents structure with explicit delimiters. It uses braces and brackets to define objects and arrays and it separates elements with commas and uses colons between keys and values.

YAML requires every scalar string to be enclosed in quotation marks is incorrect because YAML allows unquoted scalars in many cases. Quotes are only needed when the content would otherwise be ambiguous, such as when it contains special characters or leading and trailing spaces.

YAML disallows comments in workflow definitions is incorrect because YAML supports comments that start with a hash and workflow files can include them for readability.

YAML permits literal tab characters for indentation is incorrect because the YAML specification forbids tabs for indentation and requires spaces, and many parsers will error when tabs are used.

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