It is important that researchers design rigorous study methods to eliminate: a. inferences. b. the need for a consort flow chart. c. the rejection of null hypothesis. d. biases.

d)biases.

Explanation:In the research field,the biases arise due to the failure in the experiment or some error .It is also known as the experimental bias.

It is the process in which the researchers do the research to produce the output that is desired by them than the actual result. Thus this is also a main reason for the bias factor. So, the scientist should try to eliminate the biases.