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) survey
B) blocked experiment
C) prospective study
D) retrospective study
E) randomized experiment
Correct Answer:
Verified
Correct Answer:
Verified
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