Your answer would be A. because its talking abotu a change from being windy to raining later.
 
        
             
        
        
        
The real return is the difference between the nominal and actual rate of inflation. Therefore, the real return revived by Luigi will be 6%.
<u>Given</u><u> </u><u>the</u><u> </u><u>Parameters</u><u> </u><u>:</u>
- <em>Nominal rate = 7% </em>
 
- <em>Actual rate of inflation = 1%</em>
 
<em>Real return = Nominal rate - Actual rate of return </em>
Real Return = 7% - 1% = 6%
Therefore, the real return on Luigi's money would be 6%
Learn more : brainly.com/question/18801159
 
        
             
        
        
        
Short answer: 4
Explanation:
So to do this you have to look at the problem backwards, so 28 divided by 2, 14 - x = 10 If 10 + x = 14 the x = 4
        
                    
             
        
        
        
The technique to improve internal validity is D) Addition of a control group.
<h3>What is 
internal validity?</h3>
Internal validity  serves as the  study  which bring about the establishment of a trustworthy cause-and-effect relationship  that can be found in treatment and an outcome. 
it should be noted that  Internal validity also helps to eliminate alternative explanations , hence, The technique to improve internal validity is D) Addition of a control group.
Learn more about internal validity on:
brainly.com/question/968894
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COMPLETE QUESTOIN:
Which of the following is a technique to improve internal validity ____________?
A) Experimenter expectancy
B) Participant bias
C) Use of a confederate
D) Addition of a control group