The correct answer would be, Questions that develop information about the subject's feelings or thoughts.
Investigator can ask the above mentioned question along with other two questions after initial open questions from the subject. 
Explanation:
When a research is conducted, there must be a subject from whom the researcher would investigate. Initially the subject is asked or given questions, which he has to answer. After that the researcher can continue the next session of questions. Those questions can be divided into three categories:
- Questions to elicit more information
- Questions to seek an explanation
- Questions that develop information about the subject's feelings or thoughts
These three important clarification questions are asked in the second step of the investigation. 
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B. October. 
They celebrate it the second Monday in October to be exact  
        
             
        
        
        
Answer:  C. World War II (1939-1945).
Explanation:
 
        
             
        
        
        
The error that substantially undermines the reliability of the guilt finding or death sentence imposed at trial is called serious error.
<h3>
What is the serious error?</h3>
- A serious error is defined as something that no reasonable person working in good faith and with due care would do. 
- Even before a severe error or event happens, concerns about a doctor's performance may arise from a variety of causes.
- Consider the following scenario: you become convinced that your cognitive faculties are in systematic and serious error.
- A serious error is an error that significantly compromises the reliability of the guilt judgment or death sentence rendered at trial.
As the description, itself states, a serious error is an error that significantly compromises the reliability of the guilt judgment or death sentence rendered at trial.
Therefore, the error that substantially undermines the reliability of the guilt finding or death sentence imposed at trial is called serious error.
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