One example of the author keeping a lively tone even while discussing a disease is "The author humanizes the prion with playful language by saying '[i]f it..."
<h3>What is tone?</h3>
In literature, the term tone refers to the way an author or a narrator approaches a certain topic, that is, his attitude towards it. Examples of tone are the following:
The passage we are analyzing here manages to maintain a lively tone even though the author is describing a serious disease that affects cow. The reason why the tone is lively is the fact that the author humanizes the prion with playful language by saying "[i]f it manages to burrow into a corner." This conveys a funny, almost cute image, of how the protein that causes the disease functions.
With the information above in mind, we can choose option D as the correct answer choice for this question.
Learn more about tone here:
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B. Indirect Object
That should be it
        
             
        
        
        
Answer:
The question violates the requirement of clarity or unambiguity.
Explanation:
The science of designing appropriate questions comes up when one is in designing a questionnaire for surveys.
The guidelines for writing questions are given below:
- Questions must always be designed with the objective of the research in mind;
- They must be concise, direct to the point and easy to understand. In other words, they must be unambiguous. 
- They must be designed to elicit objective answers, not emotional responses. Emotional responses may not come from a lucid mind.
- Questions must follow each other sequentially and logically.   
- If the questions are closed-ended, they must contain options from which the respondents can select
- Whether closed-ended or not, the researcher must as much as possible put themselves in the shoes of the respondents such that any inhibitions from properly or correctly answer the questions are removed.
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