What type of blood do veins typically carry?

Veins typically carry deoxygenated blood as they are responsible for returning blood from the body back to the heart. Most veins transport blood that has delivered its oxygen to the tissues and has collected carbon dioxide and other waste products. The only exception to this general rule is the pulmonary veins, which carry oxygenated blood from the lungs to the heart. However, since the question refers to veins in a general context, the primary role of veins in the body is to transmit deoxygenated blood. This is why the correct answer is deoxygenated blood.