How did lillian wald change the field of public health?
a) she worked to improve sanitation infrastructure.
b) she established nursing as a respected profession.
c) she improved the sanitary techniques in hospitals.
d) she used home and school visits to reach the poor.

B) She established nursing as a respected profession.

Explanation:

Lillian D. Wald was an American nurse and activist. She is known for her struggle for female surrender and women's indence, and has fought for recognition of the nursing profession. She was responsible for the founding of the American Nursing Community, which issued guidelines and regulations that will make nursing a respected and worthy profession. She also defended the professional teaching of nursing in schools.

fluid balance is an aspect of the homeostasis of organisms in which the amount of water in the organism needs to be controlled, via osmoregulation and behavior, such that the concentrations of electrolytes (salts in solution) in the various body fluids are kept within healthy ranges. the core principle of fluid balance is that the amount of water lost from the body must equal the amount of water taken in.