Which of the following questions would you not typically use when greeting your best friend? O ¿Cómo estás?
¿Cómo te va?
O ¿Qué pasa?
¿Cómo está usted?

When I see myself with my best friend I don't use the sentence ¿Cómo está usted? (option D)

In all languages, we can find forms of oral language. A classification is informal and formal, these two differ in that the formal one is used in situations that require it, such as:

On the other hand, informal language is one in which we communicate more simply and using colloquial words, in environments such as:

According to the above, it can be inferred that the correct answer is D. because it presents a sentence with very formal language that is generally not used among best friends.

Learn more in: link

the ecuadorians are more hard working people and word from early sun raise until sunset. then you join with family for dinner and talk about their day. while in america it’s different. everyone live and have different rules and traditions habits.