Final answer:
The 40-year-old woman who smokes and uses oral contraceptives is most likely to have the highest risk for deep vein thrombosis.
Step-by-step explanation:
The patient who is most likely to have the highest risk for deep vein thrombosis is the 40-year-old woman who smokes and uses oral contraceptives. Deep vein thrombosis (DVT) occurs when a blood clot forms in a deep vein, usually in the leg. Smoking and oral contraceptive use are known risk factors for DVT. Smoking damages the blood vessels and increases the likelihood of blood clots, while some oral contraceptives can also increase the risk of clot formation.