Final answer:
Laboratory work improved Levi's survival by advancing medical technology for better disease diagnosis, developing pharmaceuticals for treatment, and implementing germ theory for disease prevention.
Step-by-step explanation:
Working in the laboratory aided in Levi's survival in several ways. Firstly, the advancements in medical technology, such as new medical instruments and processes, would provide improved diagnosis and treatment of diseases, thereby increasing chances of survival.
Secondly, the discovery and development of pharmaceuticals and anesthetics like aspirin and quinine would greatly alleviate pain and treat life-threatening conditions like malaria. Lastly, the understanding and application of germ theory, following the works of Robert Koch and Louis Pasteur, would lead to vaccinations and antiseptic techniques, greatly reducing mortality from infectious diseases and improving overall health.