Which is the correct plural form of the phrase  el estudiante inteligente el estudiantes inteligente el estudiante inteligentes los estudiantes inteligento los estudiantes inteligentes

The correct plural form of the phrase "el estudiante inteligente" is:

Explanation:

The translation of the sentence is:

The first thing to see to make a plural sentence is to identify the noun, that in this case is "estudiante," whose plural is "estudiantes," which is plural and male noun, so both the article and the adjective must be plural and male too. The article could be:

So, the article must be "los," because is the one male and plural, and finally, "inteligente" is an adjective that has no gender but a number, therefore, "s" is added to the adjective to convert it into a plural and its form is "inteligentes."