Multiple Choice
More dogs are being diagnosed with thyroid problems than have been diagnosed in the past. A researcher identified 50 puppies without thyroid problems and kept records of their diets for several years to see if any developed thyroid problems. This is a(n)
A) randomized experiment
B) prospective study
C) retrospective study
D) survey
E) blocked experiment
Correct Answer:
Verified
Correct Answer:
Verified
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