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Dr. Amari is investigating whether automobile accidents in her city increase, decrease, or stay the same 24 hours after daylight savings (this is when the time changes to one hour earlier). She looks up public records at the police station and documents any accidents and notes the dates and times.

Dr. Amari discovers a trend. She finds that accidents do seem to increase right after clocks are reset to an hour earlier.

Which one of the following research techniques is Dr. Amari using?

A. naturalistic observational research

B. archival research

C. experimental research

D. survey research