DrArnold Conducted a Study Where He Found Significant Results

Multiple Choice

Dr.Arnold conducted a study where he found significant results.Dr.Bernhardt found those results interesting,and he conducted the same study in his own lab but did not find significant results.After discussing their results at a conference,the two researchers found a few minor differences between their procedures that could explain their different results.This led to the development of new theories.What aspect of scientific evaluation is depicted in this series of events

A)  peer-reviewed publication 
B)  experimenter bias 
C)  meta-analysis 
D)  replication