Final answer:
A salesperson with an ineffective license would most likely need to reapply, retake the examination, and obtain a new license to continue practicing legally.
Step-by-step explanation:
If a salesperson has an ineffective license and needs to obtain a new license, the correct course of action would typically be to reapply, take the examination again, and obtain a new license. This implies that the previous license is no longer valid, and simply renewing it or attending a refresher course may not be sufficient. A written apology to the licensing authority would not replace the necessity of going through the appropriate licensing procedure unless the reason for the ineffectiveness of the license was due to some breach of protocol or ethics that could be rectified in this way.