Answer:
"usted" is the more formal way to speak to an adult or someone older than you in Spanish while "tu" can be used when you're speaking to someone like a friend and that you have a chill and laid back connection with.
Explanation:
A. I have studied Spanish for two years.
Answer:
The right answer is, D. Nosotros se las mandamos.
Explanation:
Because the sentence is being narrated in a plural way referring to elements of the female gender, therefore, the option that is logically related in its expression is D.