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'.
Hoy no es domingo. Hope it helped.
<span>Cuidadosamente is the word that fits the sentence.
There you go.</span>
Photosyntesis
Thats Sciense not Spanish. lol.
