In a science fiction story, the theme of teamwork would most likely be explored through the second option: **"By forcing humans to trust each other and work together to solve a serious problem facing humanity."**
This approach allows for the exploration of diverse characters, backgrounds, and perspectives, demonstrating how collaboration is essential in overcoming challenges. Set against a backdrop of advanced technology, alien encounters, or dire environmental crises, the narrative can emphasize the importance of unity, communication, and the strengths that come from diverse teams.
Through this lens, the story can showcase how individuals with differing skills and viewpoints can contribute uniquely to a common goal, highlighting the complexities of human relationships when facing extraordinary circumstances. The dramatic stakes of saving humanity would emphasize the urgency and necessity of cooperation, making the theme of teamwork resonate strongly throughout the narrative.