Answer:
d. demonstration.
Explanation:
According to a different source, these are the options that come with this question:
a. simulation.
b. model.
c. case study.
d. demonstration.
This is an example of a demonstration. A demonstration is an example in which the person exemplifies how something is performed. This is usually a practical exhibition, and it allows the person to give proof or evidence of how something operates. In this example, April is able to show the difference between pressure and force through her demonstration.
 
        
             
        
        
        
The correct answer to this open question is the following.
The adage most appropriate to memory function and aging is "use or lose it."
That is why it is so important to continually exercise the memory function so the brain never loses its ability to do something previously learned. You use it and you practice it so you master. Mastery is the result of constant repetition. So it is better to use something to be fresh in the memory and could be used when needing it. 
 
        
                    
             
        
        
        
D. $250
If she has $20 on week 8, and $30 on week 12, then on week 100 she'll have $250. because 20 divided by 8 equals 2.5 same as 30 divided by 12 equals 2.5. So you multiply 100 by 2.5 and get 250.
        
                    
             
        
        
        
Answer:
"Roaring through the pines"
"Shattered by a bolt of lightning"
"The deafening peal of thunder"
Explanation: