Based on the information provided about Marlon's struggles with communication, the option that best reflects a communication issue stemming from his tone is:
He sounded bored when he was expressing his sympathies to a colleague whose father had passed away.
This scenario highlights how tone can convey emotions and feelings, and if Marlon's tone sounded bored during a sensitive situation, it could contribute to misunderstandings or hurt feelings among his colleagues. The other options describe different types of communication issues but do not specifically focus on the tonal aspect as clearly or relevantly as this one.