Which of the following is true of the Antarctic Treaty System? A. It allows limited weapons testing of the continent.
B. It limits restrictions of environmental controls.
C. It encourages scientific research.
D. Members came from the Antarctic Agreement.

The Antarctic Treaty System encourages scientific research.

Explanation:

The Antarctic Treaty has been put in place in order to prevent escalation of the situation during the past century, but also to prohibit any violence and military interventions in the continent. Numerous countries rushed to take their piece of Antarctica with the goal of taking as much as possible for further exploitation. This led to a lot of tensions, so luckily all sides set at a table and solved the problems in a diplomatic manner.

There are a lot of articles in the treaty, but one of the most important ones is the one that focuses on science. This treaty supports scientific research and encourages the countries to do so. Not just that, but it encourages collaboration between the countries in their scientific teams in order for them to get closer and to work for mutual and global interest.

81 is a composite number.