Final answer:
There are 1 nanometer in 1/1,000,000,000 meters, as 1 nanometer equals one billionth of a meter.
Step-by-step explanation:
To determine how many nanometers are in 1/1,000,000,000 meters (m), we must understand the relationship between meters and nanometers. By definition, 1 nanometer (nm) is one billionth of a meter, which can be expressed as 1 nm = 1/1,000,000,000 m. Therefore, using this conversion factor, we can rewrite it as 1,000,000,000 nm = 1 m, or 109 nm = 1 m. Given that the question asks for the equivalent of 1/1,000,000,000 m in nanometers, it is clear that the answer is a single nanometer. The appropriate answer is a. 1 nanometer.