I have trouble understanding why the question "Do you always choose your own clothes?" has the correct answer ¿Ustedes eligen siempre su ropa? I don't understand why ustedes is used instead of the singular usted, i.e. ¿Usted elige siempre su ropa?
Many of the test questions use what I think is the plural form when it is referring to one person. I don't doubt that the answer is correct usage, I just don't understand why ustedes is used sometimes when referring to one person.
Thank you
