Epidemiological studies ______.
A. neither point to potential causal factors nor control for selection factors
B. point to potential causal factors but do not control for selection factors
C. control for selection factors but do not point to potential causal factors
D. control for selection factors and point to potential causal factors
Answer:B
Epidemiological studies ______.
A. neither point to potential causal factors nor control for selection factors B. point to potential causal factors but do not control for selection factors C. control for selection factors but do not point to potential causal factors D. control for selection factors and point to potential causal factors