What does a Sampler primitive do?

Question: In Qiskit-style primitives, what is the Sampler mainly used for? A) Estimating only Hamiltonian ground-state energies B) Optimizing a classical neural network C) Sampling output bitstrings from quantum circuit execution D) Creating new hardware qubits Correct: C Explanation: The Sampler primitive is used to sample the classical output registers of quantum circuits. It helps estimate the distribution of measured bitstrings from repeated circuit execution. Topic: quantum computing / Qiskit / Sampler