Final answer:
The three key stipulations of the Treaty of Antarctica are Demilitarization, Scientific Cooperation, and Environmental Protection, all focused on maintaining peace and preserving the continent's unique ecosystem.
Step-by-step explanation:
The three stipulations mentioned in class concerning the Treaty of Antarctica are A. Demilitarization, Scientific Cooperation, Environmental Protection. The Treaty of Antarctica, originally signed in 1959 by 12 countries and now involving 46 countries, places importance on preserving the continent for peace and science. It specifically prohibits military activities, mineral mining, and waste disposal, while suspending territorial claims to prevent political conflict. Furthermore, the Madrid Protocol in 1998 reinforced these goals by designating Antarctica as a natural reserve for peaceful purposes and scientific endeavors, explicitly banning mining and economic activities to protect the delicate environment from the effects of human interference and climate change.