Answer:
Tarai, also spelled Terai, region of northern India and southern Nepal running parallel to the lower ranges of the Himalayas. A strip of undulating former marshland, it stretches from the Yamuna River in the west to the Brahmaputra River in the east.The Terai region is a haven for wildlife. 
 
        
                    
             
        
        
        
Third option: Most people live in large urban areas
 
        
                    
             
        
        
        
Answer:
a. It is the satisfaction gained from being in a group that stands for what a person believes in.
Explanation:
An incentive that comes from taking part in sharing beliefs and opinions in a given issue will be considered a purposive incentive:
Members experience satisfaction for being part of a group that promotes their interest and reflects their lifestyle and values.
The groups will have an ideological commitment like: gay rights activists, environmental activists and civil libertarians.
The members will find a sense of belonging in the group and will feel that their voice is expressed through a community that shares their stand on the issues they try to promote.
  
 
        
             
        
        
        
It should be formal! (answer b). 
The hint in the question is that the city major will attend the ceremony- this tells you that the ceremony will have a more representative, formal character, and will not be an internal celebration among people who know each other (this would make it informal or semi-formal).