To solve this problem, we need to identify which protocol was specifically aimed at reducing the emission of chlorofluorocarbons (CFCs) into the atmosphere. Let's analyze each option:$\newline \bullet$Option 1: Montreal Protocol$\newline$ - The Montreal Protocol is an international treaty designed to phase out the production and consumption of ozone-depleting substances, including chlorofluorocarbons (CFCs).$\newline$ - It was agreed upon in 1987 and has been successful in reducing the global production of CFCs.$\newline$ - Therefore, the Montreal Protocol directly addresses the reduction of CFC emissions.$\newline \bullet$Option 2: Kyoto Protocol$\newline$ - The Kyoto Protocol is an international treaty that commits its parties to reduce greenhouse gas emissions, based on the premise that global warming exists and is caused by human-made CO2 emissions.$\newline$ - It does not specifically target CFCs but focuses on carbon dioxide and other greenhouse gases.$\newline \bullet$Option 3: Gothenburg Protocol$\newline$ - The Gothenburg Protocol is aimed at controlling air pollution and reducing acidification, eutrophication, and ground-level ozone.$\newline$ - It does not specifically address CFC emissions.$\newline \bullet$Option 4: Geneva Protocol$\newline$ - The Geneva Protocol is a treaty prohibiting the use of chemical and biological weapons in international armed conflicts.$\newline$ - It is not related to the reduction of CFC emissions.$\newline$Based on the analysis, the correct option is:$\newline$Option 1: Montreal Protocol$\newline$This corresponds to the correct option, which is Option 1.