A. Indifferent
B. Indolent
C. Casual
D. Passive
INDUSTRIOUS : diligent and hard-working.
Indifferent : having no particular interest or sympathy.
Indolent: lazy.
Casual : relaxed and unconcerned.
Passive : accepting or allowing what happens or what others do, without active response or resistance.
Antonym of INDUSTRIOUS is Indolent
