What is the possessive adjective that can also be used formally with usted?

Possessive Adjectives are used to show ownership. In Spanish lessons, there are five possessive adjectives used.

1) mi / mis - my 
2) tu / tus - your (informal)
3) su / sus - his, her, their, your (formal)
4) nuestro / nuestra / nuestros / nuestras - our
5) vuestro / vuestra / vuestros / vuestras - your (familiar, plural)

Mi comida favorita es el pollo. My favorite food is chicken.
Mi amiga Ana prefiere el pescado. My friend Ana prefers fish. 
Su mamá es alérgica al pescado pero su papá no. His mother is allergic to fish but not his father.
Mi amiga Roberto prefiere comer mariscos. My friend Roberto prefer to eat seafood.
Su mamá cocina ceviche de mariscos cada domingo. Your mom cooks every Sunday seafood ceviche.
¿Cuál es tu comida favorita? What is your favorite food?

Hola mis hermosos jóvenes

1. chiriquí a province that shares an indigenous culture with colombia. 2. san blas the largest population of indigenous people in panama. 3. bocas del toro in this province, the women make brightly-colored, embroidered blouses. 4. panama province home to three different groups of indigenous people in panama. 5. darien has less of an indigenous population than most other provinces in panama.