Answer: When the cars are allowed to park anywhere
Explanation: What is Entropy? This is a situation of disorderliness. An entropy can be high or low. An entropy is high when an area or a place is in  chaos. while a low entropy is a state of orderliness.
The parking lot that contains 50 cars will have a higher entropy when the place in chaos or dis orderly that means when cars are parked anywhere in the park without a sense of orderliness while the entropy will be low if the cars are packed in an orderly manner. 
 
        
             
        
        
        
Answer:
random assignment
Explanation:
Random assignment is an experimental technique that seeks to form random and fully randomized experimental groups in relation to the treatments presented in the research. This type of technique prevents the formation of "combined groups" that show the differences to each other and can generate a comprehensive result on the research, thus the random formation of diverse groups that can represent a much larger and different population.
An example of this can be seen in the question above, where the researcher decides the formation of the group that will receive the medicine and the group that will receive the placebo, completely randomly.
 
        
             
        
        
        
When the Romans first began constructing arches like the one above, they were positioned so the emperor could lead his men through the arch upon returning from a successful battle or war. The answer is letter D.