Antonym of INDOLENT

Answer: Option C

Indolent : wanting to avoid activity or exertion; lazy.
Desirable : wished for as being an attractive, useful, or necessary course of action.
Adequate : satisfactory or acceptable in quality or quantity.
Energetic : showing or involving great activity or vitality.
Consistent : acting or done in the same way over time, especially so as to be fair or accurate.

Antonym of Indolent is Energetic