The complex that can exhibit linkage isomerism is

Linkage isomerism arises in a coordination compound containing ambidentate ligand. Among the given ligands only, ${\mathrm{NO}}_2$ is an ambidentate ligand as it can be bonded from both $\mathrm{N}$ or $\mathrm{O}$-atom to metal atom. Thus, $\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_5\left({\mathrm{NO}}_2\right)\right]{\mathrm{Cl}}_2$
show linkage isomerism.