The verb, ser, is in the singular el/ella/usted tense, meaning that the subject is only one person or thing. This eliminates the two middle choices, as they are multiple people.
Next, the adjective. Alto is in the masculine form, so Maria, as it is a girl name, is also able to be eliminated.
The correct answer would be Tomas.
        
                    
             
        
        
        
Yo pague en D. la recepcion.
This means - I paid at the reception
A. La llave is a key, B. el ascensor is an elevator, C. el balcon is balcony. 
        
                    
             
        
        
        
1. Yo quiero poder viajar a España este verano. 
I want to be able to travel to Spain this summer. 
2. Ella hace sus jugadas con mucha precisión y poder. 
She makes her moves with much precision and power. 
3. No vas a poder hacer eso. 
You’re not gonna be able to do that.
        
                    
             
        
        
        
I believe it might be “soy”