Final answer:
The correct statement regarding client letters is that they should be brief, clear, and contain enough detail to avoid malpractice problems. There is no strict page limit, as the necessary length can vary depending on the situation at hand.
Step-by-step explanation:
The correct statement regarding the proper form for a client letter is that it should be brief. While the letter needs to be detailed enough to convey the necessary information and advice, it should not be so long that it becomes difficult to read or understand. Client letters should strike a balance between being concise and providing sufficient detail to avoid legal misunderstandings that may lead to malpractice issues. However, claiming that a client letter should not exceed four pages is an oversimplification as the length can vary depending on the complexity of the matter being addressed. The key is clarity, and providing information in a way the client can understand.