Question

what lymphoid tissue forms a ring around the openings of the gl and respiratory tracts?
lymph nodes
spleen
peyers patches
tonsils

Explanation:

Tonsils form a ring (Waldeyer's ring) around the openings of the gastrointestinal and respiratory tracts, providing immune - protection at these entry points. Lymph nodes are distributed throughout the body, the spleen is an abdominal organ, and Peyer's patches are in the small intestine.

Answer:

D. Tonsils