In NOR gate logic, how does the output compare to an OR gate?

In NOR gate logic, the output is indeed the inverse of an OR gate's output. A NOR gate outputs a high signal (1) only when all of its inputs are low (0). Conversely, an OR gate outputs a high signal whenever at least one of its inputs is high. Therefore, if we know that the OR gate will produce a high output when at least one input is true, it follows that the NOR gate will produce a low output in the same circumstance. Thus, essentially, the behavior of the NOR gate is the logical negation of the OR gate, confirming that its output is the inverse of what an OR gate would produce under the same conditions.

The other options are not applicable in this case. For example, if the output was the same as an OR gate, then they would behave identically, which is not true, given the nature of negation in logic gates. A constant high signal would not accurately reflect the dynamic input behavior of the NOR gate, and stating that it only operates with one input would misrepresent how NOR gates can accept multiple inputs, just like OR gates.