Final answer:
Thrombosis is the most likely condition to occur in someone who is immobile, due to the increased risk of blood clots forming in the veins from prolonged periods of stagnation. Option B.
Step-by-step explanation:
Among the conditions listed, thrombosis is most likely to occur in someone who is immobile.
Thrombosis is the formation of a blood clot within a blood vessel, which can impede the flow of blood through the circulatory system.
Immobile individuals are at a higher risk of developing thrombi due to venous stasis, which is a condition where blood in the veins, particularly in the legs, remains stationary for long periods.
Such situations are conducive to the formation of thrombi due to decreased blood movement that can lead to clotting.
If part of a thrombus dislodges, it becomes an embolus, which can lead to an embolism if trapped in vital organs, causing life-threatening conditions like heart attacks, strokes, or pulmonary embolisms. Option B is correct.