Answer:
a nurse a person trained to take care of the sick
True. (Sorry if this is incorrect.)
To just be happy. Now and forever
Answer: 75% probability that the child will not be a carrier.
Explanation: The Tay-Sachs disease is caused by mutation of the HEXA gene.
Tay–Sachs disease is an autosomal recessive genetic disorder, meaning that when both parents are carriers, there is a 25% risk of giving birth to an affected child with each pregnancy. A mutated copy of the gene is passed from each parent to the affected child. The causes are Genetic.
This may not be entirely helpful, but I would rule it down to either A or C. C seems most likely in my opinion.