An advantage that chorionic villus sampling has over amniocentesis as a method of prenatal testing for genetic disorders is that
A. the risk of a miscarriage as a result of the procedure is much lower for chorionic villus sampling.
B. the results from a chorionic villus sampling procedure is far more accurate than the results from amniocentesis.
C. it is an easier and less invasive procedure to use.
D. chorionic villus sampling can be done earlier in the pregnancy so the parents get the test results sooner.
Answer: D
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