Correct Answer - d
On the other hand ,a-4 - nitrobenzy l cj=hloris=de is likekly to react by the the` S_(N^(2))` mechanism as the stronglty electron - With srawing nitro would destabilze the carbocation intermediate of the `S_(N^(1))` mechanism a benzyklic chlorisde that dis favours the `S_(N^(1))` machanism