Which advanced topic allows for optional input handling of delimiters?

The topic that allows for optional input handling of delimiters is C. Delimiter handling. This subject focuses on how to effectively manage and manipulate delimiters in data processing tasks. In data workflows, especially when dealing with text data or CSV files, delimiters play a crucial role in distinguishing different fields or data points.

Understanding delimiter handling provides the ability to define, change, or adapt the delimiters used for parsing text, which can be particularly useful when the data format is inconsistent or when you're dealing with files that may use different delimiter characters. This capability is essential for ensuring accurate and clean data extraction and transformation processes, as it allows users to customize how data is read and processed based on their unique needs.

The other options do not specifically focus on the nuances of handling optional delimiters. Data parsing generally refers to the broader aspect of extracting information from data formats, file analysis deals with examining file structures and properties, and value mapping focuses on translating or converting values between different formats or categories. While these topics are related to data processing, they do not directly address the handling of delimiters in the same context as delimiter handling does.