The electron affinity values (in kJmol^-1) of three halogens X, Y and Z are respectively -349, -333 and -325. Then X, Y and Z respectively are

Order of Electron Affinity of halogens is ${\mathrm{Cl}}_2>{\mathrm{F}}_2>{\mathrm{Br}}_2$

Hence, the value of Electron Affinity will be that of ${\mathrm{Cl}}_2,{ \mathrm{F}}_2$ and ${\mathrm{Br}}_2$ respectively.

Therefore, option B is the correct answer.