A nurse is preparing a client for a diagnostic procedure to confirm leukemia. Which test is commonly used to assess the client's bone marrow?

A) This choice is incorrect because a stem cell transplant is primarily used to replace the damaged bone marrow and restore normal blood cell production, but it is not a specific treatment for anemia.

B) This choice is correct. A blood transfusion involves infusing healthy red blood cells into the client's bloodstream to address anemia and improve oxygen-carrying capacity.

C) This choice is incorrect because radiation therapy is primarily used to target and destroy cancer cells, not to address anemia.

D) This choice is incorrect because immune checkpoint inhibitors are a type of immunotherapy used to enhance the body's immune response against cancer cells, but they are not a specific treatment for anemia.

A) This choice is incorrect because leukemia is not primarily caused by exposure to infectious agents. While some viral infections may increase the risk of certain types of leukemia, infectious agents are not the main cause.

B) This choice is correct. The exact cause of leukemia is not fully understood, and it can vary among individuals. It is believed to result from a combination of genetic mutations and environmental factors, but no single cause has been identified for all cases.

C) This choice is incorrect because while genetic mutations can play a role in the development of some types of leukemia, they are not the only cause. Environmental factors and other unknown factors also contribute to leukemia.

D) This choice is incorrect because while environmental toxins and pollution may be risk factors for some individuals, they are not the leading factors in all cases of leukemia.