Answer:
C
Explanation:
'I can't read War and Peace anymore," he admitted. "I've lost the
ability to do that. Even a blog post of more than three or four
paragraphs is too much to absorb. I skim it."
The main idea is found by looking at the general idea of the text you are reading, what is it about? What does it mention?
Although coal, hydrocarbons, iron ore, platinum, copper, chromium, nickel, gold and other minerals have been found, they have not been in large enough quantities to exploit. The 1991 Protocol on Environmental Protection to the Antarctic Treaty also restricts a struggle for resources.
