It's been a while since I've read the book and I don't really a lot of the context, so just from this passage I would say it says he notices nice houses and other people's wealth and maybe envies them a little bit. (although you don't get that explicitly from this passage.)
        
                    
             
        
        
        
<em><u>B</u></em><em><u>. The clicking method does not work in noisy places.</u></em>