Final answer:
A contraindication to the administration of aspirin for the management of a patient with ACS is a recent GI bleed.
Step-by-step explanation:
A contraindication to the administration of aspirin for the management of a patient with ACS is B. Recent GI bleed. Aspirin can increase the risk of ulcers and bleeding, and patients who have had a recent gastrointestinal bleed should avoid taking aspirin. It is important for patients to consult with their physician before starting any aspirin regimen, especially if they have a history of bleeding problems.