A 77-Year-Old Woman with Breast Cancer Has Completed a Course

A 77-year-old woman with breast cancer has completed a course of external radiation and is receiving chemotherapy.After her recent chemotherapy treatment,she complains of severe weakness and lethargy,and is admitted to the hospital.She has an unsteady gait,and complains of dizziness when arising from the chair.Her platelet count is 45,000.Based on this scenario,what nursing intervention is of the highest priority?

A) Preventing falls
B) Maintaining skin integrity
C) Preventing infection
D) Replacing fluids