if its the same chart im looking at on this page, the answer is john. 
 
        
                    
             
        
        
        
To set up scenarios, you need to first use Goal seek to set up a list, then data table  to set up the reference cell. Last you need to use  VLOOKUP to set up the cells that display the output results from the scenario.
<h3>What is a Goal Seek in Excel?</h3>
 Microsoft Excel is known to have a goal seeking tool that is said to be built-in and it is one that gives room for the user to know the desired input value for any kind of  formula if the output value is said to be already known.
Hence, To set up scenarios, you need to first use Goal seek to set up a list, then data table  to set up the reference cell. Last you need to use  VLOOKUP to set up the cells that display the output results from the scenario.
See full question below
To set up scenarios, you need to first use to set up a list, then to set up the reference cell. Last you need to use to set up the cells that display the output results from the scenario. CHOOSE; VLOOKUP; data table Goal seek; data table; VLOOKUP Data validation; VLOOKUP; CHOOSE Data table; VLOOKUP;
Learn more about  VLOOKUP from
brainly.com/question/14042837
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Answer:
Option D. float is the correct answer.
Explanation:
Decimal number contains decimal point. Out of all the given data types, float data type store the number with decimal point. 
As the number has to be further used for calculations float ahs to be used. Because the numbers can also be stored in string but cannot be used for further calculations.
Hence,
Option D. float is the correct answer.