What phrase indicates a lack of personal involvement in an incident?

The phrase "being unaware" effectively indicates a lack of personal involvement in an incident. When someone is unaware, it suggests that they did not have knowledge of or could not participate in the events that took place. This phrase emphasizes a detachment from the situation, implying that the person was not informed or did not engage with what happened, which directly correlates with the idea of lacking personal involvement.

In contrast, the other phrases suggest different degrees of engagement or responsibility. "Has no role" implies a passive stance but does not convey the absence of awareness; rather, it states that the person was not part of the situation. "Seeking assistance" indicates an active attempt to address a problem, suggesting involvement and a desire to participate in resolving an issue. "Taking full responsibility" clearly denotes a high level of involvement, as it indicates accountability for the incident in question. Thus, "being unaware" is the most fitting option for conveying a lack of personal involvement.