Final answer:
Florence Nightingale emphasized the importance of cleanliness and sanitation in hospitals.
Step-by-step explanation:
Florence Nightingale emphasized the importance of cleanliness and sanitation in hospitals. She observed that poor sanitation contributed to high mortality rates in hospitals during the Crimean War and implemented strict sanitation practices in her own hospitals, leading to significant improvements in patient outcomes.
Learn more about Cleanliness and sanitation in hospitals