The correct order of nucleophilicity:

Treatment of cyclopentanone with methyl lithium gives which of the following species?

Correct order of reactivity towards $\mathrm{ESR}$ is:

The product of given reaction is:

Correct order of reactivity towards ${\mathrm{S}}_{\mathrm{N}}1$ is:

For the following reaction:

(a) ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{Br}+\mathrm{KOH}⟶{\mathrm{CH}}_3\mathrm{CH}={\mathrm{CH}}_2+\mathrm{KBr}+{\mathrm{H}}_2\mathrm{O}$

(b) ${\left({\mathrm{CH}}_3\right)}_2\mathrm{CH}-\mathrm{Br} + \mathrm{KOH} \to {\left({\mathrm{CH}}_3\right)}_2\mathrm{CH}-\mathrm{OH} + \mathrm{KBr}$

(c) 

Which of the following statements is correct?