Answer:
Anomalous expansion
Explanation:
Anomalous expansion of water is the abnormal way water expands when exposed to low temperature.
At 4 degree Celsius , the density at the top layer is usually at the Maximum which makes the water sinks down and then the water in the lower layer rises up. 
When the temperature drops below 4 degree Celsius, the water molecules at the top then freezes leaving the denser molecules at the bottom which doesn’t freeze as a result of their high density.
This way, organisms can survive in the water due to the lower layer not freezing.
 
        
             
        
        
        
the importance of this procedure is to get a set of data to compare your other test results to, like when they are active
 
        
             
        
        
        
<em>Lets take a look at all the choices:</em>
A) Energy utilization
All organisms require energy to survive. That question is out for sure!
B) Complex Yet Organized
All living organisms are complex, and if they weren't organized, well, they wouldn't exist or they would have some serious problems!
C) Capable of Self-Reproduction
Simple: Not all organisms are able to reproduce asexually, for example, humans. We do not reproduce asexually. Therefore it is not a characteristic of <u>ALL</u> living organisms
D) Composed of Multiple Cells
No-brainer! All living organisms are composed of multiple cells!!!!!!!!!!!!
Therefore, the answer is C) Capable of Self-Reproduction