Which of the following compound is most basic

-CH3 . . . para position . . .+I, +R (H.C) . . .  increases basic strength-OCH3 . . . para position . . .-I, +M . . .  increases basic strength-NO2 . . . para position . . .-I, -M  . . .  decreases basic strengthElectron donating power of -OCH3 > -CH3∴ Basic strength of 2 > 1 > 4 > 3.