Final answer:
The implementation of sanitation, ventilation, hygiene, and nutrition standards occurred during the Public Health Movement in medicine.
Step-by-step explanation:
The implementation of standards for sanitation, ventilation, hygiene, and nutrition occurred during the Public Health Movement in medicine. This movement began in the early 1800s, led by a group of reformers who advocated for improvements in urban sanitation and housing to address the poor living conditions of the working class in industrial towns. These reforms included the development of sewer systems and the promotion of hygienic practices to prevent the spread of diseases.