Meso compounds are compound which have chiral carbons (stereocenter) but compound is optically in active due to presence of plane of symmetry or centre of symmetry
∴ Compound-1 does not have plane of symmetry or centre of symmetry. So it is not meso compound.
(2)
∴ Compound-2, has plane of symmetry as well as centre of symmetry. So that it is a meso compound and optically inactive.
(3)
∴ Compound-3, does not have plane of symmetry or centre of symmetry. So that, it is nota a meso compound. it is optically active.
Hence, option (2) is right answer.