Final answer:
The ice in Antarctica is significantly thicker than all the options provided in the question, with an average thickness of about 1.9 kilometers, which is approximately 6,233 feet.Option D is the correct answer.
Step-by-step explanation:
The average thickness of the ice in Antarctica is much greater than any of the options provided in the question.
Based on scientific measurements, for instance, at the Russian Vostok station in East Antarctica, ice depth reaches over 3,000 meters (approximately 9,842 feet), much deeper than the 6,500 feet option listed.
Across the entire continent, the ice sheet averages about 1.9 kilometers in thickness, which is about 6,233 feet. This depth contains about 70 percent of the Earth's fresh water and plays a crucial role in our global climate system.