Medal, me understand. which best describes the oxidizing agent in this reaction? cl2(aq) + 2brmc003-1.jpg(aq) mc003-2.jpg 2clmc003-3.jpg(aq) + br2(aq) bromine (br) is the oxidizing agent because it gains an electron. bromine (br) is the oxidizing agent because it loses an electron. chlorine (cl) is the oxidizing agent because it gains an electron. chlorine (cl) is the oxidizing agent because it loses an electron.,