The correct order of reactivity of the given chlorides with acetate in acetic acid is :

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Solution

The correct option is A
Acetate in acetic acid is a weak nucleophile cause $S_{N} 1$ .
Also the substrate allylic halides prefer $S_{N} 1$ reaction over $S_{N} 2$

Thus, more stable the carbocation forms, more faster will be the reaction.

Order of stability of carbocation forms,

$∴$ Correct order is

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The correct order of reactivity of the given chlorides with acetate in acetic acid is :

The correct option is A Acetate in acetic acid is a weak nucleophile cause SN1. Also the substrate allylic halides prefer SN1 reaction over SN2 Thus, more stable the carbocation forms, more faster will be the reaction. Order of stability of carbocation forms, ∴ Correct order is