The nurse is educating a laboring client about techniques to promote comfort during labor. Which statement by the client indicates the need for further education.

Lying flat on the back (supine position) is actually the worst position during labor, not the best. In the supine position, the gravid uterus compresses the inferior vena cava, reducing venous return to the heart and decreasing cardiac output — a phenomenon called supine hypotensive syndrome. This can impair uteroplacental blood flow and worsen the client's discomfort rather than relieving it. The statement about the supine position being best for pain relief therefore indicates a significant misunderstanding that requires correction. The other three statements are all accurate and reflect evidence-based comfort measures. Changing positions frequently (such as walking, sitting on a birthing ball, or moving to hands-and-knees) promotes fetal descent, encourages rotation, and helps redistribute pressure. Hydrotherapy — warm showers or baths — is a well-supported non-pharmacological intervention that promotes muscle relaxation and reduces the perception of pain. Controlled breathing techniques such as slow paced breathing or patterned breathing help the client stay focused, reduce anxiety, activate the parasympathetic nervous system, and manage contraction intensity. Because the keyed answer identified the breathing statement as incorrect, that is a legacy error — breathing techniques are genuinely beneficial and the statement about them requires no correction. The statement about lying supine is the one that demonstrates the need for further teaching.