Child death may occur in the marriage of (a) Rh^+ man and Rh^+ woman
Answers
Because if the foetus blood and the carrying mother blood is different then the two bloods will react and minor blood will be destroyed this process is called. erythroblastosis fetalis
Rh+ man and Rh- woman
Explanation:
Child death occur due to incompatibility of Rh factor in man and woman. Erythroblastosis fetalis is a disease that causes death of the newborn or unborn baby. When the father is Rh+ and the mother is Rh- conceive a baby, at the time of delivery, some of the blood cells from baby enter the mother's blood stream. The immune system of mother will treat the cells as foreign particles and produce antibodies against them. In subsequent pregnancy with Rh+ baby, there are chances of the Rh disease. The blood circulation of mother and baby is separated but still the antibodies of mother's body can cross the placenta and enter the blood stream of the baby. The antibodies cause breakdown of RBCs of the baby leading to anaemia and ultimately death. This is called Rh incompatibility and child death may occur in case of Rh+ baby while Rh- baby may not be affected.
The correct answer is 'Rh+ man and Rh- woman'.