Sewage treatment programs are the correct choice as they directly promote hygiene practices through effective waste management and disease prevention. They treat wastewater to avoid the spread of waterborne diseases, thus ensuring public health. Other options like nutrition education or drug regulation do not focus specifically on hygiene.
;
Sewage treatment programs directly encourage hygiene practices by managing waste and preventing the spread of disease, while the other options focus on different areas of public health. Among the choices, sewage treatment is the most relevant to hygiene. ;