All of the provided responses illustrate ways in which language can act as a unifying force between two places. However, if you need to select one response as the most effective or relevant, the option about a lingua franca is particularly significant, as it highlights the role of a common language in facilitating communication and cultural exchange among diverse groups. Here’s that response again for clarity:
A lingua franca can allow people from different places to communicate and share popular culture.
This emphasizes how a shared language not only enhances understanding but also promotes cultural integration and collaboration.