In hemolytic disease of the newborn: 1. antibodies from the mother cross the placenta and affect the fetus. 2. the mother frequently dies during childbirth. 3. antibodies from the fetus cross the placenta and affect the mother. 4. hemolysis of white blood cells may occur. 5. fibrin is hydrolyzed.

1. antibodies from the mother cross the placenta and affect the fetus.

Explanation:

The hemolysis disease of the newborn occurs when a mother with Rh-negative conceives a baby whit an Rh-positive father triggering an immunological reaction in the baby if he/she inherits the Rh-positive factor from the father, the problem can develop if the baby´s red blood cells cross to the Rh-negative mother, the mother´s immune system sees the baby´s Rh-positive red blood cells as foreign and start to fight and destroy, as the moither´s antibodies destroy the red blood cells the baby becomes sick.

the answer should be true