The problem with retirement is that people think retire and think they have to do nothing else after so many years of hard work. That is when people start to die because they get bored and lack of ambition. If people would retire in order to do more and better thinks that cold have not been done because they were working, then, retirement wouldn't be so difficult for many people. So the factors that could influence retirement are the anticipatory decision moment that could be prolonged for years, the moment of making the decision, the day you retire, the adjustment after retiring, and the activities to do after retirement. 
 
        
             
        
        
        
Explanation:
The plastic movement of the mantle material moves like the flow of mountain glaciers, carrying the lithospheric plates along as the convection movement in the mantle moves the asthenosphere.
 
        
             
        
        
        
Answer:
I believe it would be D.  Quota
Explanation:
there will be a fixed min or max number for a particular group of people allowed to do something; i.e immigrants entering the country, workers taking a job, students enrolled for a course.
 
        
                    
             
        
        
        
cities or urban areas or tourist cities
 
        
             
        
        
        
Spreaded is not a word ,for a sentence you wouldnt say:
    I spreaded the rumor
                   but..
  I had spread the rumor