Correct Answer: AIDS antibodies

Solution : The correct option is AIDS antibodies.

The ELISA (Enzyme-Linked Immunosorbent Assay) test for AIDS (HIV) antibodies works by detecting specific HIV antibodies in a blood sample.It involves immobilising HIV antigens on a solid surface and allowing blood antibodies to attach to them. A colour change reveals the presence of HIV antibodies after a sequence of stages, implying a probable HIV infection if the result is positive. Following a positive ELISA result, confirmatory tests are often utilised to confirm an HIV diagnosis.