Final answer:
Thomas is exhibiting faithfulness, as he remains loyal to his wife and refrains from extramarital affairs despite opportunities and the behavior of his colleagues.
Step-by-step explanation:
Thomas is displaying a faithful style. Faithfulness or fidelity refers to the quality of being faithful and loyal to one's partner, which is characterized by maintaining faithfulness and abstaining from infidelity, even when presented with the opportunity. In Thomas' case, despite being away from his wife and seeing some of his male colleagues engage in extramarital affairs, he chooses not to partake in such activities, thereby demonstrating his commitment to his marriage.