Final answer:
The statement is true as the countries that make up OPEC have approximately 82% of the world's proven crude oil reserves.
Step-by-step explanation:
The countries that make up OPEC (Organization of Petroleum Exporting Countries) hold a significant portion of the world's oil reserves, and therefore have a major influence on global oil prices. OPEC consists of 15 member countries, including Saudi Arabia, Iran, Iraq, UAE, Kuwait, Venezuela, and others. According to the given information, these countries together have approximately 82% of the world's proven crude oil reserves. Therefore, the statement is true.