The stability of alkyl free radicals is due to

In the given compound

The correct order of reactivity of $\mathrm{H}$ atoms towards free radical substitution is

The correct order of stability of given carbocations is

(I) ${\mathrm{NO}}_2-{\mathrm{CH}}_2-\stackrel{+}{\mathrm{C}}{\mathrm{H}}_2$

(II) ${\mathrm{NH}}_2-{\mathrm{CH}}_2-\stackrel{+}{\mathrm{C}}{\mathrm{H}}_2$

(III) ${\mathrm{CH}}_3-\mathrm{O}-\stackrel{+}{\mathrm{C}}{\mathrm{H}}_2$

(IV) $\mathrm{HO}-\stackrel{+}{\mathrm{C}}{\mathrm{H}}_2$

(V) ${\mathrm{NH}}_2-\stackrel{+}{\mathrm{C}}{\mathrm{H}}_2$

(VI) ${\mathrm{NO}}_2-\stackrel{+}{\mathrm{C}}{\mathrm{H}}_2$

(VII) ${\mathrm{CH}}_3\mathrm{O}-{\mathrm{CH}}_2-\stackrel{+}{\mathrm{C}}{\mathrm{H}}_2$

Intermediate(Major)

The most stable carbocation is