Answer:
B. Transduction.
Step-by-step explanation:
Transduction:
Transduction is the process in which energy changes or converts from one form into another or the action or process of conversion of something into another form.
Here is olfactory transduction occurs when Carla opens eyes and saw flowers and the signal her eyes received in form of light energy are converted into neuronal signal which transfer to brain and then brain recognized the flowers.
So, the conversion of light energy into neuronal signal is called signal transdution or olfactory transduction.