Final answer:
Consult with your supervisor or a legal professional before taking action upon receiving a request from an attorney for test information, to ensure compliance with legal and ethical standards.
Step-by-step explanation:
If you receive a letter from an attorney requesting test information including test questions, responses, and scores, and it is accompanied by a signed release from the client, the ethical action would be to consult with your supervisor or a legal professional before taking any further action (option 3). This step is essential to ensure that you are compliant with legal and professional standards, particularly in regard to confidentiality and the appropriate release of information. This consultation is also crucial if test materials are protected by copyright or if releasing their details might compromise the integrity of the testing process. If the professional advises that it is appropriate to release the information, ensure that the response is done in a manner that is respectful of the client's privacy and the sensitivity of the case.