Bloodletting, the withdrawal of small quantities of blood from a patient,
as a procedure to prevent or cure illnesses, it was commonly performed by physicians until the late 19th century when they realized that it caused more harm than good.
A. as a procedure to prevent or cure illnesses, it was commonly performed
B. as a commonly performed procedure to prevent or cure illnesses
C. was a commonly performed procedure to prevent or cure illnesses
D. was a procedure to prevent or cure illness, commonly performed
E. had been a commonly performed procedure to prevent or cure illnesses
Source: CrackVerbal[/quote]
Can someone from Crackverbal explain:-
Bloodletting, the withdrawal of small quantities of blood from a patient,
as a procedure to prevent or cure illnesses, it was commonly performed by physicians until the late 19th century when
they realized that it caused more harm than good.
They in the non underlined part refers to whom?
Physicians? if yes then i dont think the same group of physicians were performing the action till 19th Century and realized that it is doing more harm than good.