Respuesta :

El niño inteligente is correct

Explanation:

There are many ways to say the intelligent boy in Spanish. These are the options:

  1. El niño inteligente.
  2. El chico inteligente.
  3. El muchacho inteligente

Those translation means the same in English. So inteligente is a Spanish adjective used either for a masculine and a feminine noun, that is, this adjective doesn't have gender.