Gaseous necrosis is seen in -

Ans. is 'c' i.e., Treponemal infection Caseous necrosis is a feature of syphilis which is caused by tremonemal infection.Gaseous necrosisIt is a variant of coagulative necrosis. It is most commonly encountered when cell death is attributable to eain organismse.g., mycobacterium tuberculosis (TB), syphilis and fungi (Histoplasma, Coccidioidomycosis).