The adjective "inteligente" is singular and can be used for both masculine and feminine nouns. It can also be used in plural when referring to multiple subjects of the same gender.
Here are the nouns that grammatically agree with the adjective "inteligente":
- la estudiante (feminine singular)
- el profesor (masculine singular)
- los hombres (masculine plural)
- mis hermanas (feminine plural)
- los gatos (masculine plural)
- mi tío (masculine singular)
However, "inteligente" does not agree with "los hombres" (which is masculine plural), "mis hermanas" (which is feminine plural), and "los gatos" (which is masculine plural) in the context of meaning or specificity, as the adjective should match the subject in context, though grammatically it can apply.
So the grammatical agreement for "inteligente" is with all nouns, but contextually "inteligente" refers to beings, and we can't choose all; instead, we can consider:
- la estudiante
- el profesor
- mi tío
Thus, the correct choices that match grammatically and contextually would be:
- la estudiante
- el profesor
- mi tío