Tú casa es grande.

The difference between "tú" and "usted" depends on the formality. "Tú" is used <u>when talking to friends or relatives (informal)</u> while "usted" is used <u>when talking to older people or a person of high social rank (formal)</u>.
In this case we want to write the <u>informal</u> form of "tú", so we use "tú". Also, when dealing with <u>permanent states</u>, the verb "ser" (to be) is used.
Answer:
I would say to help foreign clients.
Explanation:
Because I'd say helping foreign clients is sort of the "all of the above." 1. If someone were to not speak English you got their back. And 2. you could write expense reports and read safety reports and everything all in Spanish, thus, helping foreign clients.
Hope this helps :)
The answer is D 18 years old
hope this Helps D