Explanation:
AswerB
hydrogen, helium and lithium 
It took 380,000 years for the electrons to be trapped in orbits nuclei forming the first atoms. (which is option B) 
 
        
             
        
        
        
The parent cells are diploid.
        
             
        
        
        
The parents should go to gene counciling to determine who carried the gene that was passed down to the offspring.