The error is in option 4) es intelligente y atletico.
Explanation:
The error is in option 4) es intelligente y atletico. In English this means: he's intelligent and athletic. The correct spelling should be: Es inteligente y atlético. Inteligente in Spanish has only one L, and atlético has an accent mark in the E, as it's a word esdrújula (stressed on the antepenultimate syllable) and those words in Spanish always have an accent mark and it's considered an error to omit it.
El is the singular and masculine form of THE, la is the singular and feminine form of THE, los is the plural and masculine form of THE, and las is the plural and feminine form of THE.