Which of the following techniques is used sparingly because there is a slight but genuine risk of miscarriage or damage to the fetus; however, it has a 99% accuracy in diagnosing genetic problems?

a. CT scan

b. ultrasound

c. amniocentesis

d. chorionic villus sampling

d. chorionic villus sampling

Explanation:

The process of chorionic villus sampling requires to collect the chorionic tissues as a sample. This is done by inserting a catheter through the cervix or by penetrating the uterine wall through a needle. During the sample collection, there are chances that the fetus is damaged by the inserted device. However, the process gives accurate knowledge about any probability of the presence of genetic disorders in the fetus since the chromosomal content of fetus and chorion are identical.