Final answer:
Hepatitis C infection option (a) is a contraindication to kidney transplantation in a patient rapidly progressing toward end-stage kidney disease.
Step-by-step explanation:
A contraindication to kidney transplantation in a patient rapidly progressing toward end-stage kidney disease would be hepatitis C infection option (a). Kidney transplantation is not recommended for patients with active viral infections, such as hepatitis C, as it can lead to complications and decrease the success rate of the transplantation.
Hepatitis C infection is considered a contraindication to kidney transplantation due to the potential risk of transmitting the virus to the recipient. Transplantation in the presence of active hepatitis C can lead to severe complications and negatively impact the outcome of the transplant.