Final answer:
The correct therapeutic outcome to document when administering baclofen for a spinal cord injury is improved range of motion, as it signifies effective reduction in spasticity and involuntary muscle contractions.
Step-by-step explanation:
The therapeutic outcome of administering baclofen for a patient with a spinal cord injury is C) Improved range of motion. Baclofen is a muscle relaxant and antispasticity agent used to treat spasticity related to spinal cord injuries or neurological conditions, such as multiple sclerosis. It works by decreasing the frequency and severity of muscle spasms, which can lead to an improved range of motion. Hence, an improved range of motion would be a direct indicator of baclofen's effectiveness in reducing spasticity and involuntary muscle contractions, aligning with the therapeutic goals for treating conditions that involve excessive contraction of muscles, similar to the benefits seen with botulinum toxin injections in patients with disorders like cervical dystonia.