What condition is characterized by the inability to recognize an object by sight, touch, or hearing?

Agnosia refers to a neurological condition that impairs the ability to recognize and interpret sensory stimuli despite having intact sensory capabilities. Specifically, individuals with agnosia may struggle to identify objects through sight, touch, or hearing due to damage in specific areas of the brain that process sensory information. This condition can affect different senses, leading to various forms of agnosia, such as visual agnosia (inability to recognize objects through sight) or auditory agnosia (inability to recognize sounds).

Other conditions listed involve different functions. Apraxia relates to the impairment of voluntary motor skills necessary for carrying out tasks despite having physical ability and understanding; ataxia is associated with coordination and balance issues linked to problems in the cerebellum or neural pathways; while dyspraxia specifically refers to difficulty in planning and executing coordinated movements, affecting performance in tasks requiring fine or gross motor skills. Thus, agnosia is the correct answer, focusing on the specific challenge of object recognition that is not linked to sensory deficits.