What is a coupling map?

Question: What does a coupling map describe in quantum hardware? A) The number of shots used in an experiment B) The probability of measuring 1 C) The allowed connectivity between physical qubits D) The color scheme of a circuit diagram Correct: C Explanation: A coupling map describes which physical qubits are connected for two-qubit operations. It matters because hardware may not support direct gates between every pair of qubits. Topic: quantum computing / hardware / coupling map