The present international treaty regarding antarctica:
options:
a. divides the land among the twelve nations claiming rights to it.
b. allocates petroleum and mineral rights among the twelve original treaty signers and eleven other nations.
c. prohibits radioactive-waste disposal, weapons testing, and military related activities on the continent.
d. all of the choices are correct.

C. Prohibits radioactive-waste disposal, weapons testing, and military related activities on the continent

Explanation:

The Antarctica treaty which was signed in 1959 and still in usage stipulates all military activities , radioactive testing and disposal, weapon testing activities should be prohibited. The treaty is only modifiable every 30 years .

Presently , mineral exploration are not allowed.

answermemphis and thebes;

answer; the nazca plate is converging with the south american plate