• Neurophysiology of Wernicke's Area: Wernicke's area is located in the posterior part of the superior temporal gyrus in the categorical (dominant) cerebral hemisphere, responsible for language comprehension.
• Lesion Effects (Wernicke's Fluent Aphasia): Patients produce fluent, rapid, effortless speech with normal syntax and rhythm, but sentences are devoid of meaning (talk rapidly but make little sense, with paraphasias and complete failure of speech comprehension) [Option 3].

Correct option: (3) Talk rapidly but make little sense