Electron revolves around the nucleus. Protons, neutrons are called nucleons because they form nucleus of the atom. Quarks are the fundamental particles which combines to form neutrons, protons and other particles.
Hence electron is the answer.
        
                    
             
        
        
        
So the answer is B) he should wire each room in parallel. This is because when the bulbs are in parallel if one part of the parallel circuit is broken (eg when you switch a light off) then the current can still flow to all the other bulbs, meaning they stay turned on. Hope this helps :)
        
                    
             
        
        
        
Answer:
I got the answar ...............................
 
        
             
        
        
        
<span>Niche - </span><span>An organism's particular role in an ecosystem, or how it makes its living.</span>