I would probably say plump. 
Essentially, in this question, you're looking for the word that would be the least insulting. More broadly, when asked about positive connotation, you're looking for a word that is not viewed negatively. 
Words like fat and cheap have negative connotations, especially when applied to people. Words like plump and frugal are much more positive. 
        
                    
             
        
        
        
before "The people"
On the sidewalk, the people stared at the fast-moving car.
The sentence keeps meaning and makes sense.
 
        
             
        
        
        
From the excerpt of "Dover Beach" by Matthew Arnold, the line "...on the French coast, the light/Gleams and is gone..." obviously symbolizes the impermanence of life. The light on the French coast is like an opportunity presented to us, once. We must be ready once this opportunity comes.