right-handers exhibited an equal or more active brain response in slightly more than one-fourth of the drug trials, compared to left-handers. This statement should be classified as

1 the problem= the main issue or subject being investigated in the study
2 a method= a procedure, process, or approach used to investigate the problem
3 a finding= a proven result obtained as a part of the investigation
4 as assumption= a supporting idea, belief, or theory for which no proof is provided in the study
5 irrelevant information= material that does not directly help to provide an understanding of the problem

my answer I choose is 4?!