Is a procedure in which a small piece of membrane is removed from the chorion, a layer of tissue that develops into the placenta.

Chorionic villi sampling (CVS)

Explanation:

Chorion is one of the extraembryonic layers. One of the functions of the chorion is the formation of the placenta in humans. Chorionic villi sampling (CVS) is one of the procedures for genetic testing. During CVS, a tissue sample from the chorionic villi is collected by placing a catheter in the uterus or inserting a needle through the abdominal cavity. The chorion cells and fetal cells are genetically identical. Therefore, these tissues are analyzed to identify possible genetic disorders.

osteogenesis imperfecta (oi) refers to a congenital ailment of bones. in the condition, the bones become brittle or fragile. this ailment is a general result of the defect or mutations in the genes (colia1 or colia2). this mutation results in imperfect collagen formation either in quantity or quality wise.  

there are eight kinds of oi defects, and each kind varies with certain distinctions in symptoms. the usual symptoms include frequent bone fractures, loss of hearing in infants, protruding eyes, discoloration of the white in the eyes, respiratory issues, loosening of the joints, short stature, and other symptoms.  

the correct answer was location c, because earth is tilted away from the sun at this time