Hi there!
The answer is D. ¿Cómo está usted?
“Usted” is used formally for anyone older or in a higher rank than you. When addressing a teacher you say “usted”.
Hope this helps!
To indicate a substantiation or an action on someone’s behalf
Answer: llegaron
Ellos llegaron a class justo a tiempo
In English: they arrived to class just in time.
Maribel, es bonita y guapa. Ella cumplió 28 años y es de Lima, Peru.