According to current research,which of the following accounts for the secular trend in development worldwide?

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Current research suggests that improvements in nutrition and health care are the main factors responsible for the secular trend in development worldwide. This includes access to clean water, adequate sanitation, medical care, and vaccinations. These improvements lead to healthier, stronger bodies, which in turn support better cognitive development and academic achievement. While better sex education and declines in teen sexual behavior can be important factors in individual outcomes, they are not considered to be primary drivers of the secular trend seen on a global scale. Lack of proper prenatal care can also have negative effects on individual outcomes, but again, it is not considered to be a primary driver of large-scale trends.

According to Current Research,which of the Following Accounts for the Secular