Final answer:
The Golgi stain randomly stains individual neurons and is not selective for a specific type, therefore it cannot be determined whether it stains motor neurons, sensory neurons, or interneurons based solely on the staining.
Step-by-step explanation:
The Golgi stain, developed by Camillo Golgi, is used to visualize neurons and their structures. It is a silver staining method that reveals the detailed structure of individual neurons. When the Golgi stain is applied to nervous tissue, it stains a limited number of neurons in their entirety, but it is not specific to any type of neuron. It can stain motor neurons, sensory neurons, and interneurons. The choice of neuron varies randomly, which allows the study of individual neuron structures without the background of other cells. Therefore, the correct answer is 4) Cannot be determined because the Golgi stain does not selectively target one specific type of neuron, rather it randomly stains individual neurons regardless of their type.