Final answer:
Dysphagia is a contraindication to enteral nutrition support in an elderly patient.
Step-by-step explanation:
A contraindication to enteral nutrition support in an elderly patient would be Dysphagia. Dysphagia is a condition characterized by difficulty swallowing, which can make it challenging for the patient to safely consume food through the gastrointestinal tract. This would make enteral nutrition support difficult or impossible to administer.