The correct answer is: 
The end of the Cold War. 
Explanation: 
<em>The reunification of Germany was possible due to the end of the Cold War</em>. After the fall of the Berlin wall, Berlin was unified as a single city. In 1990 one year after the fall of the Berlin wall, negotiations between the United States, France, England and the Soviet Union made the reunification possible marking the end of the Cold War. The <em>German Democratic Republic then</em> <em>became part of the</em><em> Federal Republic of Germany. </em>
 
        
                    
             
        
        
        
Answer:
A secondary reinforcer.
Explanation:
Operant conditioning can be defined as an associative learning process which involves reinforcing the strength of a behavior. Thus, the outcome depends on the response in operant conditioning. 
A reinforcement of a desired behavior involves the process of strengthening a positive behavior being exhibited by an individual through the use of stimulus. Therefore, making the behavior to be exhibited in the future by the individual.
Basically, by reinforcing desired behaviors with rewards, parents, teachers and leaders can help people in building positive norms.
In this scenario, when a child behaves well for an entire day, the child earns a star. After acquiring fifteen stars, the child is allowed to pick a prize from a toy chest. The star is best described as a secondary reinforcer because it motivates or influences the decision of the child to behave well for an entire day. 
 
        
             
        
        
        
Answer:
<u>Perception </u> is a three phase process of selecting, organizing and interpreting information, objects, people, events or situations.
Explanation:
Perception involves three steps.
1. Selecting
In the first stage we select that stimuli which attracts us the most by ignoring the others about making perception about any event or object.
2. Organizing
In the second stage we organize the information about our selection.
3. Interpretation
In the third step we interpret that information in a meaningful way that makes sense to us.
 
        
             
        
        
        
The authors imply that the "first group of initiatives" would primarily take both positive and negative factors into account throughout, without rejection.
<u>Explanation: </u>
The first group of initiatives is seen as a group of initiatives that tries to deal with downsides of having a figure like GDP by attempting to try to fix the indicators of GDP from the base. The key objective these group of measures include is the act of accounting for the environmental damage and the sustainability associated with the given GDP growth. 
It puts forward that the consequence of the economic growth and other forms of modernization need to be acknowledged while needing to retain the features and benefits that come with the GDP. Thus, the positive and negative factors needing to be taken into account while keeping in mind not to reject any.