Final answer:
To determine the range of a step function g(x), we would need its definition or a graph. The range consists of all possible y-values it can output. Without the definition or graph of g(x), the correct range cannot be provided.
Step-by-step explanation:
The range of a step function, g(x), consists of the set of all possible output values (y-values) that g(x) can take. Based on the options provided, the correct answer must be a list of values since multiple outputs are typical for a step function. Unfortunately, without the explicit definition or graph of the step function g(x), we cannot determine its range. In a general scenario, to find the range of a step function, you would look at its graph to identify all the distinct y-values that the function outputs for the domain specified. As the options given do not correspond to the information provided and are missing the context of the function g(x), we are unable to select the correct range.