A functional MRI (fMRI) measures
A) structures of the brain.
B) structural detail of various structures.
C) the release of energy from water in biological tissue.
D) the flow of blood within the brain.
Answer: D
Rationale: Traditional MRIs only allow researchers to visualize the structures of the brain. Functional MRIs (fMRI) allow researchers to visualize blood flow, which is closely correlated to brain activity.
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