If Mr. Diallo perceives that his audience is engaged, yet some members are closed-eyed and note-taking, how should he interpret their behavior?

Mr. Diallo should interpret the behavior of the audience members who are closed-eyed and taking notes as potentially indicating disinterest in his position. While note-taking can often signify engagement, the context of having closed eyes raises the possibility that these individuals may not be fully present or actively listening to the speech. This behavior can signal that they are not engaged with the material being presented.

It is important to recognize that while some audience members might be engaged, the combination of note-taking with closed eyes suggests a lack of active participation and could even indicate that they are struggling to connect with the content being communicated. Therefore, being receptive to these non-verbal cues can help a speaker assess the overall engagement of the audience and adjust their approach if necessary.