The term "big data" refers to $$

the huge and complex data sets generated by today's sophisticated information generation, collection, storage, and analysis technologies

the management of detailed information about individual customers and carefully managing customer touch points to maximize customer loyalty

a method of gathering primary data by asking people questions about their knowledge, attitudes, preferences, and buying behavior

a method of personal interviewing that involves inviting small groups of people to gather for a few hours with a trained interviewer to talk about a product, service, or organization

I DON'T KNOWYET