Final answer:
Hospital administration is likely prompted to take action due to a deficit related to a gap between PPS and DRGs and costs of care.
Step-by-step explanation:
The action of administrators would most likely be prompted by option a, which states that the hospital is incurring a deficit related to a gap between the PPS (Prospective Payment System) and the DRGs (Diagnosis Related Groups) and costs of care.
The PPS is a reimbursement system used by Medicare to pay hospitals a set amount for each case treated, based on the average cost of treating patients in similar DRGs.
If the hospital is incurring a deficit due to the gap between the PPS and the DRGs, it means that the hospital is not receiving adequate reimbursement for the care provided to patients, causing financial strain.