Hippocrates improved the practice of medicine by: A. Encouraging collaboration of ideas between doctors.
B. Advocating a sound diet and good hygiene.
C. All of the Above

C

Explanation:

According to Hippocrates, the diagnosis and treatment of mental and physical diseases are based on observation, consideration of the causes, balance of theory, and on the four liquids, blood, phlegm, yellow bile and black bile Advocating a sound diet and good hygiene.

Collecting descriptions of symptoms of various illnesses .

polling is a process and the outcome is not involved in the process itself.

the outcome, which is an unfavorable rating for a particular candidate is not affected by the mechanical process of polling.

it rather depends on the number of people voting in favor of the candidate.

this is an outcome of people's preferences.

the answer is )multiethnic