do antioxidants help protect against cancer? thirty rats, who were prone to cancer, were given a number 1 - 30. a computer was used to randomly select ten numbers. the rats associated with these numbers were put in the first group. ten more numbers were selected. the rats associated with these numbers were put in the second group. the remaining rats were put into group three. the first group of rats were given blueberry extract on their normal meal, the second group was given fish oil and the third group had nothing extra. each of the rats were given similar living conditions. after two months, the rats were dissected and the number of tumors were counted. match the part of the experiment above that goes with each of the following terms.