The light would be best described as AN UNCONDITIONED STIMULUS.
An unconditioned stimulus refers to any stimulus which naturally evokes a response from the affected person. The response that is evoked is termed unconditioned response. In the question given above, the light is the unconditioned stimulus while the blinking is the unconditioned response.<span />
The answer is A, reproduction.
4. Peas gave characteristics that have two forms
Answer: The more rainfall, the bigger the tree, so that creates a rainfall
Explanation: