IUPAC name of the following structure is:

Chloromethyl benzene

The correct answer is option 4. Chloromethyl benzene.

The given structure is

The worldwide using chemical names are created and developed by IUPAC, it follows certain rules for naming the compounds.

Here, the parent chain is benzene.

There is one methylene \(CH_2\) substituent and chloro substituents are present here. The benzyl means a benzene ring attached to a \(CH_2\) group and chloro means a substituent chloride is attached to it. From the methyl group, two hydrogens were replaced and other groups are attached. So, the \(CH_2\) group will be called as methyl and chloro present which combines to form chloromethyl as chloro is first in alphabet then the methyl comes.

Hence, the IUPAC name of this compound is chloromethyl benzene.