Problem: A nurse is reinforcing education for the parents of a child with acute lymphocytic leukemia (ALL). The parents ask for information about what helps determine long-term survival. On what should the nurse base the response? type of treatment, stage at diagnosis, and age at diagnosis progression of illness, initial WBC count, and age at diagnosis histologic type of the disease, initial platelet count, and type of treatment histologic type of the disease, initial white blood cell (WBC) count, and age at diagnosis