Physician-hospital organizations (phos) are also called organizations.                a.  medical staff-hospital      b.  health management      c.  individual provider      d.  preferred provider 

A. medical staff-hospital

Explanation:

A medical-hospital organization (PHO) may also be called a medical-hospital staff because it refers to the legal or informal partnership of hospitals with its staff of doctors, nurses and other professionals. The purpose of these PHO is to expedite care so that diagnosis and treatment are performed in the shortest time and with the highest degree of quality, as a medical team specialized in a hospital equipped for the problems that the patient may have.

the maintenance of fluid balance during exercise. author information: fluid supplementation is necessary for exercise in which fluid losses must be offset by intake to avoid the negative effects of hypohydration on health and performance.

all the above is what i would say