What condition is characterized by the inability to move both arms and legs?

The condition characterized by the inability to move both arms and legs is quadriplegia. Quadriplegia refers to paralysis that affects all four limbs, which includes both arms and both legs. This paralysis typically results from damage to the spinal cord or brain, often at the cervical level. Individuals with quadriplegia may have varying levels of sensation and motor function depending on the severity and location of the injury.

In contrast, paraplegia specifically involves the loss of movement and feeling in the lower half of the body (typically the legs), which affects only the lower limbs. Paresis refers to weakness in a muscle or group of muscles, which may result in reduced range of motion but not complete paralysis. Hemiplegia involves paralysis on one side of the body and affects either the arm and leg on that side but leaves the other side unaffected. Understanding these distinctions clarifies why quadriplegia is the correct answer when it comes to the inability to move both arms and legs.