I think it is C
Hope this help you?!
        
             
        
        
        
I am not sure but maybe he wanted to make things suspenseful and make new problems and conflict
        
                    
             
        
        
        
Answer:
The student picked <em><u>his or her</u></em> own backpack and ran to math class.
Explanation:
Pronouns are those words that we use to replace nouns. This is to avoid the repetition of the nouns and to make the sentence smoother and easier to understand.
In the given sentence, the main subject is "the student". Now, we cannot know what is the gender of the student but it is understood that it will be either he/ she, which makes the required pronoun include both genders. And on that note, the pronoun for the 'student' will be used in the possessive determiners (his/ her) instead of the personal pronoun (he/she) forms.
Thus, the correct answer will be "his or her".
 
        
             
        
        
        
Duo lingo works pretty good !
        
                    
             
        
        
        
Answer:
In order to express oneself in a formal way, correct grammar must be used, since it makes for a serious tone, that is, it shows whatever was written was done so carefully and seriously, as a sign of respect for the addressee. In formal writing, even abbreviations must be avoided, as well as contractions. Therefore, correct grammar is the way to go if you want to achieve a formal tone.