Within how many days of the anniversary date must the annual comprehensive assessment be performed?

The annual comprehensive assessment must be performed within 30 days of the anniversary date. This is to ensure that the assessment is still current and relevant to the individual's current situation. Options A, C, and D all fall outside of this 30-day timeframe, making them incorrect. If the assessment was conducted within 15 days (option A), it may not accurately reflect any changes or developments that have occurred since the anniversary date. Similarly, waiting 45 (option C) or 60 days (option D) could result in outdated information being used for the assessment. Therefore, option B is the most appropriate answer.