Final answer:
A client with a high cervical spine injury is most likely to develop autonomic dysreflexia.
Step-by-step explanation:
The client most likely to develop autonomic dysreflexia is a client with a high cervical spine injury.
Autonomic dysreflexia is a condition that can occur after a spinal cord injury, specifically at the level of T6 or above. It is characterized by a sudden and dangerous increase in blood pressure due to an overactivity of the autonomic nervous system. A high cervical spine injury, such as an injury at the C1-C4 level, can disrupt the normal regulation of the autonomic nervous system, making the individual more susceptible to autonomic dysreflexia.
correct option C. A client with a high cervical spine injury.