Question

multiple choice
thrombo (coagulation) + phleb (blood) + itis (inflammation) = inflammation caused by over coagulation of the blood
thrombo (tumor) + phleb (vein) + itis (disease) = disease of the veins that causes the creation of tumors
thrombo (clot) + phleb (vein) + itis (inflammation) = inflammation of the vein caused by a clot
thrombo (coagulation) + phleb (vein) + itis (pertaining to) = pertaining to the coagulation of blood within the veins

Explanation:

The prefix "thrombo -" refers to a clot, "phleb -" refers to a vein, and "-itis" refers to inflammation. Thrombophlebitis is the inflammation of a vein caused by a clot.

Answer:

thrombo (clot) + phleb (vein) + itis (inflammation) = Inflammation of the vein caused by a clot