He is quite industrious.

Answer: Option C

Industrious : diligent and hard-working.
Hard-working : (of a person) tending to work with energy and commitment; diligent.
Indifferent : having no particular interest or sympathy; unconcerned.
Lazy : unwilling to work or use energy.
Indisposed : slightly unwell.

Antonym of Industrious is Lazy