What scenario permits waiver of a lawyer's disqualification due to imputed conflicts?

The scenario where a waiver of a lawyer's disqualification due to imputed conflicts is permitted occurs when the conflict is personal and does not materially limit representation. In such cases, personal conflicts that are not connected to the interests of the client allow the lawyer to continue representing the client without the concern of the disqualification rules that typically apply to imputed conflicts. This is grounded in the understanding that not all conflicts have the same potential impact on a lawyer's ability to represent a client effectively.

Choosing to waive the disqualification due to a personal conflict that isn't material ensures that the lawyer can still provide their expertise and representation without compromising their professional responsibilities. This remains consistent with the ethical obligations a lawyer has, particularly when the conflict does not significantly affect the interests of the representation.

The other choices present different circumstances that either do not align with the criteria for waiving disqualification or are not established practices under the Model Rules. Thus, understanding the nuances of personal versus imputed conflicts and their respective implications is crucial for maintaining ethical standards in legal practice.