Choose the correct form of the adjective to describe the following noun.
los chicos
feliz
felices
felizes
felizos
felices
The correct form of the adjective to describe "los chicos" (plural masculine noun) is "felices." In Spanish, adjectives must agree with the nouns they modify in both gender and number. Since "chicos" is masculine and plural, the adjective "feliz" must be in its plural form, which is "felices."