During the anterior chest auscultation of a client, what is the most critical action the nurse should take to ensure accurate assessment of lung sounds?

Use the stethoscope over clothing to reduce friction and noise

instruct the client to breathe in deeply through their nose while listening

only auscultate on the left side as it has fewer lobes and compare

Position the stethoscope at the midclavicular line and listen to breathing sounds during inspiration and expiration