Look at the dipole vectors for AlluraRed, AlluraRedWater, and AlluraRedEthylAcetate. Are they what you would expect based on the atom electronegativities and intermolecular interactions

There is no reason to think the results are biased or not conducted properly but you should not assume the results are correct just because they were done in a laboratory so the answer would be c. it is likely to be reliable because the results support the conclusion presented.