The answer is C as it is said at the start of the introductory paragraph I hope this helps
        
                    
             
        
        
        
The sentence that contains correct capitalization and punctuation is B) Last summer, we visited California.
A should be - Who is Mary's teacher...
C should be - My doctor's name is Dr. Habeeb.
D should be Jennifer bought cupcakes, diet soda, and potato chips at the store.