Why Aren't Spurious Relationships a Problem When Data Are Collected

Why aren't spurious relationships a problem when data are collected using a laboratory experiment?

A) Longitudinal data eliminate any potential problems with time order.
B) Most experiments use measures that have been shown to be reliable and valid.
C) Most people who volunteer to be in an experiment are honest and give accurate information about their social characteristics and behaviors.
D) random assignment equally distributes spurious variables across the different experimental conditions or groups
E) The random selection of subjects ensures that the study sample will be representative of the target population.