Answer :
Rhesus (Rh) factor is an inherited protein found on the surface of red blood cells.The Rh factor can cause problems if you are Rh negative and your fetus is Rh positive. The sentence that is associated here is B. New treatmentsduring pregnancy could prevent harm to the developing child.
New treatments during pregnancy could prevent harm to the developing child. Thus, option "B" is correct.
What is the rhesus factor?
The rhesus factor is an antigen present in the blood of humans and other primates, this is very important because the RH factors are uncompatible between them causing that for example is someone is RH positive and receives a tranfussion of RH negative it can cause its blood to coagulate in minutes, leading to death, so the discovery of the RH factor allowed to have safer trnasfussions of blood, and to help pregnant woman that had different RH factors than her babies to be treated in order to not harm the baby with their blood.
Thus, option "B" is correct.
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