Question

Can i get some help:

Answer 1

You should use the first one

Step-by-step explanation:

tu means your in Spanish while usted mean you sometime used in different ways

Answer 2

Tú

Step-by-step explanation:

Cuando hablo con mi herman ito, el trato es familiar y me dirijo a él con:

When I talk to m y little brother, the treatment is familiar and I talk to him with:

tú