Which of the following is an example of semi-structured data?

C is correct because XML (Extensible Markup Language) is semi-structured data. While it follows a specific syntax (tags), the schema is flexible and not as rigid as structured data like relational databases. This format is used to organize data hierarchically, making it suitable for exchanging information across systems. Option A : Relational databases are structured, with strict schemas and fixed formats. Option B : CSV is structured data as it represents tabular formats with predefined columns. Option D : Videos are unstructured data, lacking a fixed schema. Option E : Scanned documents are unstructured data as their content cannot be directly queried or analyzed without preprocessing.