What is the Bloch sphere used for?

Question: What is the Bloch sphere commonly used to visualize? A) The state of a single qubit B) The temperature of a quantum computer C) The number of shots in an experiment D) The size of a classical database Correct: A Explanation: The Bloch sphere is a geometric representation of a single-qubit state. It helps visualize how single-qubit gates rotate or transform the state. Topic: quantum computing / Bloch sphere / qubits