Final answer:
The correct answer to the question is option C, which lists Tay-Sachs disease, Gaucher disease, and Niemann-Pick disease as the autosomal recessive diseases that a baby born to Ashkenazi Jewish parents is at an increased risk for.
Step-by-step explanation:
If a couple are both Ashkenazi Jews, their baby is at increased risk for certain autosomal recessive diseases. Specifically, these diseases include Tay-Sachs disease, Gaucher disease, and Niemann-Pick disease, making option C the correct answer. Autosomal recessive disorders, such as Tay-Sachs, Gaucher, and Niemann-Pick, require both parents to carry the recessive gene in order for a child to be affected. For example, a child born to two cystic fibrosis (CF) carriers has a 25% chance of inheriting the disorder, as with other autosomal recessive diseases. Therefore, the population in question, Ashkenazi Jews, has a higher carrier frequency for certain genetic disorders, including the ones listed above, especially compared to the general population.
Sickle cell anemia, while an autosomal recessive disorder, is not commonly associated with the Ashkenazi Jewish population. Hemophilia is a genetic disorder but linked to the X chromosome, and Huntington's disease is an example of an autosomal dominant disorder, so neither are correct in the context of the question.