b
\(\underset{\begin{smallmatrix} 
 More\,\operatorname{cov}alent\,bond \\ 
 complete\,octet\,neutral 
\end{smallmatrix}}{\mathop{I}}\,>\underset{\begin{smallmatrix} 
 More\,\operatorname{cov}alent\,bond \\ 
 complete\,octet 
\end{smallmatrix}}{\mathop{II}}\,>\) \(\underset{\begin{align}
   Less\,\operatorname{cov}alent\,bond \\ 
  incomplete\,octet \\ 
  ({{0}^{o}}>{{C}^{o}}) \\ 
  stability \\ 
\end{align}}{\mathop{III}}\,>\underset{\begin{align}
   Positive\,ch\arg e \\ 
  on\,highly \\ 
  electronegative \\ 
  O-atoms\,and \\ 
 negative \\ 
  ch\arg e\,on \\ 
  less\,electronegative\, \\ 
  C-atom \\ 
\end{align}}{\mathop{IV}}\,\)