Final answer:
True, there is an association between the use of safe WASH practices and improved children's nutritional status, with areas having better sanitation and clean water access seeing reduced rates of stunting and other developmental issues.
Step-by-step explanation:
It is true that the use of safe WASH practices is associated with better nutritional status among children. Improved sanitation and access to clean water play a critical role in the health of communities. Children in areas with access to these amenities are usually at a lower risk of stunting and other development issues compared to children in areas where open defecation is common and sanitation facilities are inadequate. The World Health Organization (WHO) and UNICEF reports highlight the significant impact that poor sanitation and unsafe drinking water have on public health, especially among children, who are particularly vulnerable to diarrheal diseases and infections such as intestinal worms that can lead to malnutrition, anemia, and stunted growth. Moreover, investing in water and sanitation systems is not only crucial for health but also provides substantial economic benefits, as every US dollar invested can yield a worldwide return of approximately 5.5 US dollars.