Which statement best defines big data?

• A. Data that never changes
• B. Large volume across variety
• C. Small data set
• D. Data stored on one computer

Answer: (B)

Big data means data sets that are huge in size and come in many different forms, coming from multiple sources and often at speed. The essential idea is volume and variety: very large amounts of data and a mix of data types and sources that traditional tools struggle to handle. The statement about a large volume across variety fits this best. The other descriptions describe static, small, or single-computer data, which don’t capture the scale and diversity that define big data. In practice, organisations deal with data from web logs, sensors, transactions, and social media, requiring specialized storage and processing to gain insights.