Researchers Wished to Determine If a New Experimental Medication Will

Multiple Choice

Researchers wished to determine if a new experimental medication will reduce the symptoms of allergy sufferers without the side effect of drowsiness.To investigate this question,the researchers gave the new medication to 50 adult volunteers who suffer from allergies.Forty-four of these volunteers reported a significant reduction in their allergy symptoms without any drowsiness.How could this study be improved?

A) Include people who do not suffer from allergies in the study in order to represent a more diverse population.
B) Repeat the study with only the 44 volunteers who reported a significant reduction in their allergy symptoms without any drowsiness,giving them a higher dosage this time.
C) Give the spouses of the volunteers a placebo.
D) Use randomization to divide the volunteers into 2 groups-one to receive the experimental medication and one to receive the placebo.