Choose the Item That Best Matches Each Item of the Following

Choose the item that best matches each item of the following:
-The theory of causation for a disease or condition

A) Morbidity
B) Endemic
C) Epidemic
D) Pandemic
E) Validity
F) Index
G) Incidence
H) Epidemiology
I) Prevalence
J) Disease rates
K) Mortality
L) Causality
M) Etiology
N) Risk factors
O) Reliability
P) Surveillance