Burning one cubic foot of natural gas will produce _____ BTUs.

Burning one cubic foot of natural gas typically produces around 1,000 to 1,200 BTUs (British Thermal Units). The range that includes this amount is generally accepted for natural gas heating values. While option D suggests a range of 900-1100 BTUs, this aligns closely with the lower end of typical heating values for natural gas, which can vary based on specific gas compositions and other factors.

The other options present higher heating values that do not accurately reflect the average BTU output for one cubic foot of natural gas, making them less suitable for this question. Thus, the correct answer captures the average production of BTUs, making it the most accurate choice for the combustion of natural gas.