Answer:
Innovation.
Explanation:
Innovation can be considered the ideal term, because an innovative idea arises from the set of a new technique, method or invention that aims to improve an existing method, standard, or product. 
However, added to an innovative idea is the risk, since innovation breaks an already established standard, so it is through science and technology that an invention will gain greater foundation and recognition, which increases its credibility and acceptance.
 
        
             
        
        
        
The term that best fit the blank is RELEVANCE. The Google Adwords system is a system that is created by Google for the purpose of advertising online. Therefore, relevance is very important in this aspect as this shows how useful the ad is to the consumers who are doing the google search.
        
             
        
        
        
The question above has multiple choices as follows; 
a. API 
b. docstring
c. help 
d. man
Well, I am stuck between B and C. I’ll however settle for (B) docstring. 
Python docstrings provide an easier way to associate
documentation with python classes, modules and functions. The interactive help function
on the other is built in and is intended for interactive use. This function
exists to view help interactively. With the help feature, you can quickly learn
classes, modules, functions and many more.
 
        
             
        
        
        
Vertical alignment determines the position of the text within a section of a document relative to the top and bottom margins, and is often used to create a cover page.