Final answer:
Option B is the best ethical decision. It involves substantiating the need for a new team leader, reviewing ethics and hiring policies, and addressing budget concerns.
Step-by-step explanation:
The best ethical decision as the Chief Liaison Officer would be Option B: Convene a meeting and ask Sam to substantiate the need for a new team leader. Review the ethics policy and company hiring guidelines. Express your concerns about the budget. This option addresses the situation head-on by examining the justification for the new position while also ensuring adherence to ethical and company standards. It directly confronts the potential conflict of interest and the implications of hiring someone with knowledge of a competitor's confidential methods.