Aromatic compounds are characterized by Electrophilic substitution reactions. Among the following compounds the most reactive  compound towards Electrophilic substitution reactions is

▬ OH group . . . - I , +M . . . EDG (+M > > -I)-CH3 group . . . +I , +R . . . EDG-OCH3 group . . . - I , +M . . . EDG (+M > -I)EDG increases the reactivity  towards ESRElectron donating power of  -OH > -OCH3 > -CH3∴ Reactivity towards ESR is (4) > (1) > (3) > (2)