Final answer:
Early ambulation is a preventative measure that reduces the risk of VTE by improving circulation and preventing blood stasis, which is important for pregnant women with pressure from the fetus and individuals with heart failure during long periods of inactivity. Option B is correct.
Step-by-step explanation:
One preventative measure that helps to reduce the risk of Venous Thromboembolism (VTE) is early ambulation. VTE is a condition where blood clots form in the deep veins of the body, often in the legs. Clots may form due to pressure on returning veins, which impedes circulation.
Early ambulation, or the process of getting a person moving and walking after a period of rest, is key in preventing VTE by improving blood flow and reducing the stasis of blood that can lead to clots. For a pregnant mother, especially in the late stages of pregnancy, there may be additional pressure on the veins from the fetus, leading to circulatory problems in the legs and an increased risk of clot formation.
Hence, encouraging the mother to be mobile and to walk, even for short periods, can be very beneficial. Similarly, for individuals with chronic conditions like heart failure, which can also increase the risk of DVT, such as Ahaya's situation, walking frequently and performing leg exercises during long periods of inactivity, like during air travel, can significantly decrease the risk of developing clots.