Final answer:
The nurse would most likely try to prevent back injuries when working on an orthopedic rehabilitation unit that requires lifting and positioning of patients.
Step-by-step explanation:
The nurse would most likely try to prevent back injuries when working on an orthopedic rehabilitation unit that requires lifting and positioning of patients. The back is a complex structure with various muscles and joints between vertebrae, and it bears large forces when lifting and carrying heavy loads. Discs in the back can be easily crushed or injured, leading to pain and mobility issues.