The organic chloro compound, which shows complete stereochemical inversion during an SN2reaction is

N S 2 reaction means nucleophilic substitution bi- molecular reaction. This reaction takes place when the leaving group is attached to a primary carbon atom. The order for Option A: 2 5 2 C H CHCl . Here, the chloride is attached to a secondary carbon. Option B: 3 3 CH CCl . Here, the chloride is attached to a tertiary carbon. Option C: 3 2 CH CHCl . Here, the chloride is attached to a secondary carbon. Option D: 3 CH Cl . Here, the chloride is attached to a primary carbon. So, as we can see that option (D) is the one which will undergo N S 2 reaction most easily and hence, it wil