Why does qubit connectivity matter?

Question: Why does hardware connectivity matter when running a quantum circuit? A) Two-qubit gates may only be directly supported between connected physical qubits B) It decides the font size of the circuit diagram C) It prevents all single-qubit gates D) It removes the need for transpilation Correct: A Explanation: On real quantum hardware, not every qubit can directly interact with every other qubit. If a circuit needs a two-qubit gate between non-connected qubits, the compiler may need to insert SWAP operations or remap qubits. Topic: quantum computing / hardware connectivity / transpilation