Ant is believed to be the most industrious creature.

Answer: Option B

Sensible : done or chosen in accordance with wisdom or prudence; likely to be of benefit.
Diligent : having or showing care and conscientiousness in one's work or duties.
Successful : accomplishing a desired aim or result.
Punctual : happening or doing something at the agreed or proper time.
Industrious : diligent and hard-working.

Synonym of Industrious is Diligent