A Researcher Tests the Influence of Environment on Cognitive Development

Multiple Choice

A researcher tests the influence of environment on cognitive development by taking newborn children away from their parents and assigning half of them to a rich cognitive environment and half to a deprived cognitive environment.Is there anything wrong with this experiment,and if so,what?

A) No; there is nothing wrong with this experiment.
B) Yes; there is no control group.
C) Yes; this experimental method violates ethical standards.
D) Yes; this experimental method cannot control for the Hawthorne effect.