............. neurons are neurons responsible for converting external stimuli from the environment into corresponding internal stimuli.

The correct option is A Sensory
A- Neurons are specialized cells which can detect, receive and transmit different kind of stimuli.

There are three types of neurons viz Sensory neurons are responsible for converting external stimuli from the environment into corresponding internal stimuli whereas Motor neurons carries stimuli from brain or spinal chord to corresponding effect or organ,muscle or glands. Sensorymotor neuron perform function of both sensory and motor.