Which short-term effect is associated with Bone Marrow Syndrome?

Bone Marrow Syndrome is a condition that occurs as a consequence of exposure to high doses of ionizing radiation, leading to damage of the bone marrow, which is crucial for the production of blood cells. The correct answer, which highlights the reduction of white blood cells, is fundamental to understanding the implications of radiation exposure on the body.

White blood cells, or leukocytes, are vital components of the immune system, responsible for fighting infections and disease. When the bone marrow is compromised due to radiation, it struggles to produce these cells, resulting in a decrease in their count, a condition known as leukopenia. This reduction can severely impact the body's ability to respond to infections and can lead to increased susceptibility to illness.

In contrast, options that mention increased blood pressure or severe dehydration are not directly related to bone marrow function and will not result primarily from the immediate impacts of radiation damage to the marrow. Diarrhea may be associated with radiation exposure, but it is linked more to gastrointestinal syndrome rather than bone marrow syndrome specifically. Thus, the significant and direct consequence of bone marrow syndrome is indeed the reduction of white blood cells.