Children are likely to be healthier in a country in which: A. The government invests in hospitals in urban areas B. The government invests modestly in education C. The government invests in education, but most students are boys D. The government makes education, including for girls, a national priority

A I believe

Explanation:

the question asks of health not of education. the only option that speaks on behalf of there health is the hospitals

use this site

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.