Answer:
This means success is a verb and the related part of speech success is not a verb; in this case, success is a noun. Another test for verbs is to use the word in question in different verb tenses. If the sentence still makes sense, the word is a verb. 
 
        
                    
             
        
        
        
Answer:
ease of access,
also if referring to present times... people would find it reassuring for the product to be clean
 
        
             
        
        
        
I think it would be either C or A, but I think C is more right than A
        
                    
             
        
        
        
A. The answer is A because D and C are incomplete, and B has improper grammar, being there is a comma after the game makes it incorrect.