In the early years of ww1 which of the following demonstrated the us governments commitment to winning public support for war?

A. her social environment  

Explanation:

Caroline's social surroundings have presumably made her pursue medical school as a career. The reason is her mother is a doctor and her sister is a nurse, so she has always been in contact with health care professionals at home. As a result, such strong urge toward health care has had an impact on her, who wishes to follow her mother and sister's steps.