G7B06:What is a shift register?

Direct answer summary (2023-2027 NCVEC pool)

The official correct answer for G7B06 is A clocked array of circuits that passes data in steps along the array.

The key fact is A clocked array of circuits that passes data in steps along the array. Match that fact to the exact condition in the question; the other choices describe a different rule, band, component, or operating situation.