C. Pongas...it´s referred to you it ends in s because it´s referreing to"tu" (informal way) and not "usted"(formal way)
Class schedule drawings for children
The answer is B. estudiante.
The article preceding it, 'las', is the plural feminine article. 'estudiante' in the sentence is singular only, but it is gender neutral. 'son' is the third person plural conjugation of the verb 'ser'. 'inteligentes' is an adjective that would refer to plural subjects. To fix the sentence, change 'estudiante' to 'estudiantes'.
