Sheridan et al. (2012) were interested in understanding the relationship of social disparity on the brain development of children through adolescence. To accomplish this, they conducted a study looking at the relationship of a family's socioeconomic status (SES) and the child's language exposure in the home when compared to functional magnetic resonance imaging (fMRI) brain scans and cognitive task completion. The fMRI and cognitive skills task were used to evaluate brain development (Sheridan et al., 2012). Reference Sheridan, M. A., Sarsour, K., Jutte, D., D'Esposito, M., & Boyce, W. T. (2012). The impact of social disparity on prefrontal function in childhood. PloS One, 7(4), Article e35744. https://doi.org/10.1371/journal.pone.0035744 Using the above information, what type of study did Sheridan et al. conduct? O survey O correlation O experiment O naturalistic observation