El ha estado en un incendio. 
El salió herido.
        
             
        
        
        
Answer:
Juan es <u>un</u> chico inteligente.
Explanation:
The reason why A is correct is because Juan is singular and masculine, making the answer 'un.'
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Answer:
quieres una foto o esto es por nada
Explanation:
 
        
             
        
        
        
ps supongo que 75 alumnos no?
osea dices que hay 100 alumnos
y el 75% es un 3/4 del total que sería el 100
entonces me sale 75 alumnos