English Language · English

The following sentence consists of an incomplete part that has been split into four jumbled parts labelled P, Q, R, S. Select the combination that correctly completes the sentence: Recent studies into the 'default mode network' of the human brain suggest that mind-wandering is not merely a lapse in productivity _______________________________________________ providing the cognitive scaffolding required for complex social navigation. P. through the metabolic synchronization of disparate cortical regions that remain active during periods of wakeful rest Q. by allowing the brain to simulate various hypothetical scenarios without the constraints of immediate external stimuli R. but rather a vital neurological process that facilitates autobiographical memory and future-oriented planning S. effectively integrating past experiences with current goals to forge a coherent sense of self