**Core Concept**
Virchow's Triad is a fundamental concept in thrombosis and hemostasis, describing the three main factors that contribute to the development of deep vein thrombosis (DVT). These factors are blood flow alterations, hypercoagulability, and endothelial injury.

**Why the Correct Answer is Right**
The correct answer is related to the concept of Virchow's Triad, which includes blood flow alterations, hypercoagulability, and endothelial injury. Blood flow alterations can be caused by factors such as immobility, surgery, or trauma, leading to stasis and increased coagulability. Hypercoagulability can be caused by genetic or acquired conditions that increase the levels of coagulation factors or decrease the levels of anticoagulant proteins. Endothelial injury can be caused by trauma, infection, or inflammation, leading to exposure of the subendothelial tissue to the blood and activation of the coagulation cascade.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it is not a component of Virchow's Triad.
**Option B:** This option is incorrect because it is not a component of Virchow's Triad.
**Option C:** This option is incorrect because it is not a component of Virchow's Triad.

**Clinical Pearl / High-Yield Fact**
Virchow's Triad is often remembered using the mnemonic "Blood Flow, Blood Clot, Blood Vessel" to recall the three main factors that contribute to DVT.

**Correct Answer:** A.