Answer:
C. Directional signs at an international airport are written in English.
Step-by-step explanation:
This is the option that best exemplifies how language can be used to exclude people. In this example, signs are written exclusively in English, even though people from many different nationalities go through the airport, and many of these people do not speak English. A better approach would be to include the most commonly spoken languages, or the ones that are most spoken by travellers along with the English.