Which of the Following Is an Advantage of Replicability in Experiments

Which of the following is an advantage of replicability in experiments?

A) Experiments can be performed again and again over time in order to measure change.
B) Experiments are performed in isolation, away from the messy realities of everyday life.
C) Experiments allow research subjects to speak in their own voices.
D) Experiments are extremely cheap.
E) Each experiment is unique and illustrates something new.