Since movement of the lymphatic fluid is not fueled by a pump, such as the heart, how do you think this liquid is propelled around the body? (hint: think back to some of the features of veins that blood fight back to the heart.

Unlike the heart that has a pump, the lymph is propelled through the lymphatic vessels through the pressure of the tissue fluid.  The forces of the blood moving in the veins are also one reason why liquids can propelled around the body. Lastly, cells are bathed with interstitial fluid which makes it easier to move in the veins of the human body

correct answer is a. and d.