The one that best fits the description would be the FLAGELLA or flagellum (singular). The flagella is a part of cell that resembles like a whip that allow movement of the cell. Generally, the purpose of flagella is for locomotion, but its physical structure might differ depending on the organism.
D. T cells attack antigens on foreign substances and B cells produce antibodies.
Lymph ducts drain the lymph into one of subclavian veins and thus return it to general circulation . Generally , lymph flows away from the tissues to lymph nodes and eventually to either the largest lymph vessel in the body, the thoracic duct.