Definition:
A research problem is a statement about an area of concern, a condition to be improved, a difficulty to be eliminated, or a troubling question that exists in scholarly literature, in theory, or in practice that points to the need for meaningful understanding and deliberate investigation.
Not including all the terms but this is right.
The others are just thrown in there somewhere.
vena cava
right atrium
right ventricle
Pulmonary aretery
Left ventricle
left atrium
Airtic valve
Aorta
The correct answer is letter C. G<span>erontogastroenteroepidemiology would probably deal with the study of stomach and intestinal epidemics that strike the aged.
"Geronto" - age
"Gastroentero" - stomach and intestines
"Epidemio" - epidemic
"logy" - study of</span>
B would be the most obvious option.
