Training Regimens and Medical Research

To prevent bias in counting the apples (correct)

To ensure the people do not get affected by the chemical

To increase the chances of getting accurate results

To make the experiment more complicated

To determine which orchard has better apple trees

To see if different concentrations have different effects (correct)

To reduce the number of apples harvested

To compare the effects of different chemicals

To determine which orchard has better apple trees (correct)

To test the effectiveness of the chemical on other crops

To compare the effects of different chemicals

To see if the chemical has any effect on apple yield