When comparing texts by the writer the similarities and differences conclude about the writing ability of the author. Thus option D is correct. 
<h3>What is writing ability?</h3>
The complete question is attached to the image below.
Writing ability is the writer's capability and capacity to produce the content and the text from the phrases and the words that have a meaningful purpose and definition. 
It allows the readers to understand the purpose of the topic matter that the author wants readers to understand. The writing ability of the author is evaluated on basis of the similarities and the differences.
It shows the writer's knowledge, and capability to use the topic to write the matter with differences and similarities. It allows the readers to understand that the writer can use correct grammar, characters, topic matter, and expression of the ideas.
Therefore, the similarities or differences tell about the <u>writing ability</u>. 
Learn more about writing ability here:
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The procedure of comparing cultural similarities as well as differences among societies is called the<u> "comparative method".</u>
Comparative research is an examination system in the sociologies that plans to make correlations crosswise over various nations or societies. A noteworthy issue in near research is that the informational indexes in various nations may not utilize similar classes, or characterize classifications in an unexpected way (for instance by utilizing diverse meanings of destitution).
Comparative research, basically, is the demonstration of contrasting at least two things and a view to finding something around one or everything being thought about. This system regularly uses various teaches in a single report. With regards to technique, the larger part assention is that there is no approach impossible to miss to relative research.
 
        
                    
             
        
        
        
Answer:
All of the above.
Explanation:
Yup.
Just makes sense..
I feel like those would frighten me if I were in her shoes...