Sensory receptor cells convert a stimulus, such as an odor molecule or light, into an electrical signal that is conveyed to the nervous system. This process is called:

Sensory transduction.

Explanation:

Sensory transduction may be defined as the process by which sensory stimulus are transformed in the body. The receptor cell is mainly involved in the sensory transduction process.

The sensory receptor cell like a light or an odor is converted into the electrical signal by the process of signal transduction. The information is then conveyed to the nervous system in the form of electrical signals.

Thus, the correct answer is signal transduction.