The given reaction where CH₃Cl reacts with hydroxide ion to give CH₃OH is an S_N2 nucleophilic substitution reaction. In this reaction, OH^- and Cl^- are both nucleophiles with an excess of electrons. In the transition state (c) the carbon atom is bound to only 3 hydrogens as the binding of OH^- and leaving of Cl^- is simultaneous. Hence, the carbon atom is sp2 hybridised. The correct statements are (i) and (iii).