The correct response for inflammation or infection of the lymph nodes is Adenitis. Adenitis refers specifically to the inflammation of glandular tissue, which includes lymph nodes.
Tonsillitis refers specifically to inflammation of the tonsils.
AIDS (Acquired Immunodeficiency Syndrome) is a condition caused by HIV that affects the immune system but is not directly a term for lymph node inflammation.
Lupus (Systemic Lupus Erythematosus) is an autoimmune disease that can affect multiple organs and systems, including lymph nodes, but it does not specifically refer to their inflammation or infection.
So, among the provided options, "Adenitis" is the most accurate answer.