The correct answer is B) 115°F. Carbon disulfide has a boiling point of 115°F (46.2°C) at standard atmospheric pressure. This is a fundamental property of the chemical that is essential knowledge for anyone operating vessels and dealing with hazardous materials, including those required to hold a US Coast Guard Captain's License. The other options are incorrect - 167°F is too high, 111°F is slightly too low, and 46°F is well below the actual boiling point of carbon disulfide.