Why do investigators sometimes repeat an experiment that other researchers have already completed?

A) to try to eliminate the independent variables
B) to check whether the results are replicable
C) to check whether the explanation is parsimonious
D) to increase the demand characteristics of the experiment

Investigators repeat an experiment that other researchers have already completed to check whether the results are replicable. Replication is an essential component of the scientific method, and it ensures that the findings are valid and reliable. If other researchers can replicate the results, it increases confidence in the original study and supports the generalizability of the findings.