Final answer:
Health care professionals and hospitals are required to use certified EHR technology to avoid financial penalties and receive incentive payments under the ARRA of 2009, aligning with options d. A and C only.
Step-by-step explanation:
Under the American Recovery and Reinvestment Act (ARRA) of 2009, hospitals and health care professionals are required to become 'meaningful users' of certified Electronic Health Records (EHR) technology in order to avoid financial penalties and receive incentive payments.
By encouraging the use of electronic medical records (EMRs), the goal is to reduce administrative costs while maintaining or improving the quality of care.
Therefore, the answer to the question is that to be considered 'meaningful users', health care professionals and hospitals need to use certified EHR technology to avoid financial penalties and to be eligible for incentive payments, which corresponds to options d. A and C only.