Answer:
- Classical;unconditional stimulus
Step-by-step explanation:
According to the description, the given situation exemplifies 'classical conditioning' as Devin blink(just as he did) exhibits 'learning through affiliation' that occurs due to connection of two stimuli(neutral and biologically dominant) to produce a learned(conditioned) response. The concept was coined by famous psychologist Ivan Pavlov due to which it also known as 'Pavlovian conditioning'.
In this situation, the flash would be categorized as the 'unconditioned stimulus' as the conditioned and unconditioned stimulus together contribute to evoke a 'conditioned or learned response' from Devin.