Final answer:
Anxiety can be triggered by perceived threats, even when stimuli aren't strong predictors of danger. The fight-or-flight response is an adaptive mechanism that evolved to help our ancestors survive in dangerous situations. Psychological threats in the modern world can also trigger anxiety.
Step-by-step explanation:
The behavioral manifestations of anxiety can be initiated by various factors, even when the stimuli aren't great predictors of danger.
One possible explanation is that anxiety is a response to perceived threats, which triggers the fight-or-flight response.
This response is an adaptive mechanism that evolved to help our ancestors survive in dangerous situations.
However, in the modern world, psychological threats can also trigger anxiety even when there is no real physical danger.