The correct answer is 'phenomenon'. A phenomenon is any event that is observable, however common it may be. 
        
                    
             
        
        
        
Whale sharks eat plankton<span>  copepods, krill, </span>fish eggs<span>, Christmas Island red crab larvae and small nektonic life, like small squid or </span>fish<span>.</span>
        
                    
             
        
        
        
D.) the last one because it explain mode details about the question and the other ones don’t
        
                    
             
        
        
        
Answer:
It means that you never know how much mental strength and perseverance a woman really has until problems or troubles arise in her life. In relation to a tea bag, the longer you let a tea bag set in hot water, the stronger the flavor of the tea will become. 
 
        
             
        
        
        
Dr King while making use of an allusion refers to the Reverend Rein hold Niebuhr who was a theologian from America. 
<u>Explanation</u>:
He was also a professor and an intellectual who was leading during the time of the twentieth century. He used it to strengthen his argument by saying that Niebuhr had written many influential books and those books spoke about the morality of the individual in comparison to the immorality of the society. The writing about the serenity prayers are also his contributions. This was used by king to strengthen his evidence.