Which one of the following is the context in which the term "qubit" is mentioned?

• (a) Cloud Services: A qubit is not a cloud-service term; cloud computing uses classical bits and distributed servers. Verdict: Incorrect.
• (b) Quantum Computing: A qubit (quantum bit) is the basic unit of information in quantum computing, capable of superposition. Verdict: Correct.
• (c) Visible Light Communication Technologies: This field deals with data transmission using visible light, not qubits. Verdict: Incorrect.
• (d) Wireless Communication Technologies: Wireless communication uses radio/spectrum technologies; qubit is not its core term. Verdict: Incorrect.

Answer: (b) Quantum Computing.