The best statement that describes saturation will be "saturation is reached when the amount of water vapor in the air has reached the maximum amount." Saturation can also be when the ground has to much water and can't absorb anymore. The correct answer is D.
This is a case of both Rh incompatibility and ABO incompatibility. Since the first pregnancy is normal but the second one resulted in hemolytic disease; it means that in the first pregnancy, the baby was Rh negative which lead the Rh positive mother to produce antibodies against Rh negative blood, which is noted in the second pregnancy leading to hemolytic disease. There may also be a form of ABO incompatibility. The correct answer is that both of her children are type A, Rh negative, and the mother is a type B, Rh positive.
Stratum corneum is made of dead keratinized cells that can't be infected, while stratum basale is made of living cells that can be hosts for this virus.