Explanation:
Arachnophobia, the fear of spiders, is one of the most common animal phobias. People with arachnophobia experience undue anxiety even when a spider poses no danger. This fear can be attributed to evolutionary factors, where spiders have been historically associated with venom and infection, making this phobia a survival mechanism. However, in arachnophobia, the fear response is disproportionate to the actual threat, and even non-venomous or harmless spiders can trigger panic attacks, avoidance behavior, and extreme distress in affected individuals.