Eliminating bacteria from a living surface using a chemical substance is referred to as:

Explanation

Antisepsis refers to the use of chemicals on living tissues to kill or inhibit bacteria, preventing infections, particularly in medical settings like surgeries and wound care. In contrast, disinfection applies to non-living surfaces, disinestation is for pest control, and chemotherapy is related to cancer treatment. Unlike these other processes, antisepsis specifically targets infection prevention in living tissue.