Molly is in her 10th week of pregnancy. She is undergoing a procedure in which small threads are removed from the outer membrane that envelops the amniotic sac and fetus. Which procedure is she undergoing?

A) Cervical variability study
B) Chorionic villus sampling
C) Ultrasound sonography
D) Amniocentesis

Chorionic Villus Sampling

A prenatal test where a small sample of the placental tissue is taken to test for genetic disorders and chromosome abnormalities in the fetus.

Outer Membrane

The outermost layer in the cell envelope of Gram-negative bacteria, involved in protection and substance exchange.

Amniotic Sac

A fluid-filled sac within a female’s uterus that surrounds and protects the developing fetus during pregnancy.