Multiple choice
Run this circuit, then measure. With what probability do you get |1010⟩?
// Occupied orbitals 0 and 2 -> qubits 0 and 2 are |1>; orbitals 1,3 stay |0>. const c = circuit(4); c.x(0); c.x(2); return c;
Commit your prediction for P(|1010⟩) — then run it.