उत्तर : 1. "HIV"
व्याख्या :

Answer: A) HIV Explanation: ELISA - Enzyme-Linked Immuno Sorbent Assay.   An ELISA test may be used to diagnose: HIV, which causes AIDS.   An ELISA also called EIA, is a test that detects and measures antibodies in your blood. Antibodies are proteins that your body produces in response to harmful substances called antigens.