AP Psychology

Answer: A - Functional Magnetic Resonance Imaging (or fMRI) are used in cognitive science research to measure brain responses to stimuli.
Key Takeaway: An fMRI is a useful tool in cognitive science as it measures the relative amount of oxygenated blood that flows to a part of a brain under study. In David’s research, trauma victims’ brains may be more stimulated in some areas in response to visual stimuli than non-trauma victims. An fMRI provides a differential analysis of the part of the brain that is more engaged in processes and thus, requiring more oxygenated blood.