Answer:
An SN2 (substitution nucleophilic bimolecular) reaction
Step-by-step explanation:
This is a type of organic reaction that involves a nucleophile attacking an electrophilic center, resulting in the displacement of a leaving group from that center. This type of reaction typically occurs at a saturated carbon atom, where the nucleophile displaces a leaving group attached to that carbon atom. The reaction is bimolecular because it involves the collision of two molecules, the nucleophile and the substrate.