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)blocked experiment
B)randomized experiment
C)prospective study
D)survey
E)retrospective study

Question

Quizplus · Accepted Answer

This is a prospective study because it involves following a group of individuals over time to see how their exposures affect their outcomes. In this case, the researcher is tracking puppies without thyroid problems over several years to see if their diets influence the development of thyroid problems.

More Dogs Are Being Diagnosed with Thyroid Problems Than Have