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Army Recruits Are Assigned Randomly into Specific Sleeping Quarters,where They

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Army recruits are assigned randomly into specific sleeping quarters,where they do a lot of socializing during break time and at night.The political and religious attitudes of the recruits were surveyed before they were assigned sleeping quarters,and then again after several weeks of training.The generals found that the recruits' political and religious ideas tended to form clusters based on sleeping quarters.Which of the following can best explain this situation?


Definitions:

CT Scan

A diagnostic medical imaging technique that uses computer-processed combinations of many X-ray measurements taken from different angles to create cross-sectional images of specific areas of a scanned object.

Magnetic Resonance Imaging

A medical imaging technique used to visualize detailed internal structures using powerful magnetic fields and radio waves; commonly known as MRI.

Electroencephalography

A non-invasive method to record electrical activity of the brain using electrodes placed along the scalp.

Positron Emission Tomography

A diagnostic imaging test using a radioactive substance to visualize and measure changes in metabolic processes.

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